Comparing version 4.0.0 to 4.0.1
@@ -1,11 +0,6 @@ | ||
import { Options } from './types'; | ||
export declare const z: (options: Options) => number; | ||
export declare const mu: (options: Options) => number; | ||
export declare const tau: (options: Options) => number; | ||
export declare const sigma: (options: Options) => number; | ||
export declare const epsilon: (options: Options) => number; | ||
export declare const beta: (options: Options) => number; | ||
export declare const betaSq: (options: Options) => number; | ||
export declare const limitSigma: (options: Options) => boolean; | ||
declare const _default: (options: Options) => { | ||
import { Options } from './types.js'; | ||
declare const builder: (options: Options) => { | ||
SIGMA: number; | ||
MU: number; | ||
EPSILON: number; | ||
@@ -19,2 +14,3 @@ TWOBETASQ: number; | ||
}; | ||
export default _default; | ||
export { builder as default }; |
@@ -1,33 +0,22 @@ | ||
"use strict"; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
}); | ||
exports.z = exports.tau = exports.sigma = exports.mu = exports.limitSigma = exports.epsilon = exports.default = exports.betaSq = exports.beta = void 0; | ||
const z = options => options?.z ?? 3; | ||
exports.z = z; | ||
const mu = options => options?.mu ?? 25; | ||
exports.mu = mu; | ||
const tau = options => options?.tau ?? mu(options) / 300; | ||
exports.tau = tau; | ||
const sigma = options => options?.sigma ?? mu(options) / z(options); | ||
exports.sigma = sigma; | ||
const epsilon = options => options?.epsilon ?? 0.0001; | ||
exports.epsilon = epsilon; | ||
const beta = options => options?.beta ?? sigma(options) / 2; | ||
exports.beta = beta; | ||
const betaSq = options => beta(options) ** 2; | ||
exports.betaSq = betaSq; | ||
const limitSigma = options => options?.limitSigma ?? options?.preventSigmaIncrease ?? false; | ||
exports.limitSigma = limitSigma; | ||
var _default = options => ({ | ||
EPSILON: epsilon(options), | ||
TWOBETASQ: 2 * betaSq(options), | ||
BETA: beta(options), | ||
BETASQ: betaSq(options), | ||
Z: z(options), | ||
TAU: tau(options), | ||
LIMIT_SIGMA: limitSigma(options) | ||
}); | ||
exports.default = _default; | ||
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// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
export { | ||
constants_default as default | ||
}; | ||
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@@ -1,5 +0,6 @@ | ||
export { default as rating } from './rating'; | ||
export { default as rate } from './rate'; | ||
export { default as ordinal } from './ordinal'; | ||
export { default as predictWin } from './predict-win'; | ||
export { default as predictDraw } from './predict-draw'; | ||
export { default as rating } from './rating.js'; | ||
export { default as rate } from './rate.js'; | ||
export { default as ordinal } from './ordinal.js'; | ||
export { default as predictWin } from './predict-win.js'; | ||
export { default as predictDraw } from './predict-draw.js'; | ||
import './types.js'; |
@@ -1,42 +0,217 @@ | ||
"use strict"; | ||
var __defProp = Object.defineProperty; | ||
var __defProps = Object.defineProperties; | ||
var __getOwnPropDescs = Object.getOwnPropertyDescriptors; | ||
var __getOwnPropSymbols = Object.getOwnPropertySymbols; | ||
var __hasOwnProp = Object.prototype.hasOwnProperty; | ||
var __propIsEnum = Object.prototype.propertyIsEnumerable; | ||
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value; | ||
var __spreadValues = (a, b) => { | ||
for (var prop in b || (b = {})) | ||
if (__hasOwnProp.call(b, prop)) | ||
__defNormalProp(a, prop, b[prop]); | ||
if (__getOwnPropSymbols) | ||
for (var prop of __getOwnPropSymbols(b)) { | ||
if (__propIsEnum.call(b, prop)) | ||
__defNormalProp(a, prop, b[prop]); | ||
} | ||
return a; | ||
}; | ||
var __spreadProps = (a, b) => __defProps(a, __getOwnPropDescs(b)); | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
}); | ||
Object.defineProperty(exports, "ordinal", { | ||
enumerable: true, | ||
get: function () { | ||
return _ordinal.default; | ||
// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
// src/rating.ts | ||
var rating = (init, options = {}) => { | ||
const { MU: mu, SIGMA: sigma } = constants_default(__spreadValues(__spreadValues({}, options), init)); | ||
return { mu, sigma }; | ||
}; | ||
var rating_default = rating; | ||
// src/rate.ts | ||
import { sortBy, identity, range } from "ramda"; | ||
import unwind from "sort-unwind"; | ||
// src/util.ts | ||
import { zip } from "ramda"; | ||
var sum = (a, b) => a + b; | ||
var rankings = (teams, rank = []) => { | ||
const teamScores = teams.map((_, i) => rank[i] || i); | ||
const outRank = new Array(teams.length); | ||
let s = 0; | ||
for (let j = 0; j < teamScores.length; j += 1) { | ||
if (j > 0 && teamScores[j - 1] < teamScores[j]) { | ||
s = j; | ||
} | ||
outRank[j] = s; | ||
} | ||
return outRank; | ||
}; | ||
var teamRating = (options) => (game) => { | ||
const rank = rankings(game, options.rank); | ||
return game.map((team, i) => [ | ||
// mu[i] | ||
team.map(({ mu }) => mu).reduce(sum, 0), | ||
// sigma^2[i] | ||
team.map(({ sigma }) => sigma * sigma).reduce(sum, 0), | ||
// (original team data) | ||
team, | ||
// rank[i] | ||
rank[i] | ||
]); | ||
}; | ||
var utilC = (options) => { | ||
const { BETASQ } = constants_default(options); | ||
return (teamRatings) => Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0)); | ||
}; | ||
var utilSumQ = (teamRatings, c) => teamRatings.map( | ||
([_qMu, _qSigmaSq, _qTeam, qRank]) => teamRatings.filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank).map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c)).reduce(sum, 0) | ||
); | ||
var utilA = (teamRatings) => teamRatings.map( | ||
([_iMu, _iSigmaSq, _iTeam, iRank]) => teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length | ||
); | ||
var gamma = (options) => { | ||
var _a; | ||
return (_a = options.gamma) != null ? _a : ( | ||
// default to iSigma / c | ||
(c, _k, _mu, sigmaSq, _team, _qRank) => Math.sqrt(sigmaSq) / c | ||
); | ||
}; | ||
var util_default = (options) => ({ | ||
utilC: utilC(options), | ||
teamRating: teamRating(options), | ||
gamma: gamma(options) | ||
}); | ||
Object.defineProperty(exports, "predictDraw", { | ||
enumerable: true, | ||
get: function () { | ||
return _predictDraw.default; | ||
// src/models/plackett-luce.ts | ||
var model = (game, options = {}) => { | ||
const { EPSILON } = constants_default(options); | ||
const { utilC: utilC2, teamRating: teamRating2, gamma: gamma2 } = util_default(options); | ||
const teamRatings = teamRating2(game); | ||
const c = utilC2(teamRatings); | ||
const sumQ = utilSumQ(teamRatings, c); | ||
const a = utilA(teamRatings); | ||
return teamRatings.map((iTeamRating, i) => { | ||
const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating; | ||
const iMuOverCe = Math.exp(iMu / c); | ||
const [omegaSum, deltaSum] = teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => qRank <= iRank).reduce( | ||
([omega, delta], [_], q) => { | ||
const quotient = iMuOverCe / sumQ[q]; | ||
return [omega + (i === q ? 1 - quotient : -quotient) / a[q], delta + quotient * (1 - quotient) / a[q]]; | ||
}, | ||
[0, 0] | ||
); | ||
const iGamma = gamma2(c, teamRatings.length, ...iTeamRating); | ||
const iOmega = omegaSum * (iSigmaSq / c); | ||
const iDelta = iGamma * deltaSum * (iSigmaSq / c ** 2); | ||
return iTeam.map(({ mu, sigma }) => ({ | ||
mu: mu + sigma ** 2 / iSigmaSq * iOmega, | ||
sigma: sigma * Math.sqrt(Math.max(1 - sigma ** 2 / iSigmaSq * iDelta, EPSILON)) | ||
})); | ||
}); | ||
}; | ||
var plackett_luce_default = model; | ||
// src/statistics.ts | ||
import gaussian from "gaussian"; | ||
var normal = gaussian(0, 1); | ||
var phiMajor = (x) => normal.cdf(x); | ||
var phiMajorInverse = (x) => normal.ppf(x); | ||
// src/rate.ts | ||
var rate = (teams, options = {}) => { | ||
var _a, _b, _c; | ||
const { LIMIT_SIGMA, TAU } = constants_default(options); | ||
const { model: model2 = plackett_luce_default } = options; | ||
let processedTeams = teams; | ||
if (options.tau) { | ||
const tauSquared = TAU * TAU; | ||
processedTeams = teams.map( | ||
(team) => team.map((p) => __spreadProps(__spreadValues({}, p), { | ||
sigma: Math.sqrt(p.sigma * p.sigma + tauSquared) | ||
})) | ||
); | ||
} | ||
}); | ||
Object.defineProperty(exports, "predictWin", { | ||
enumerable: true, | ||
get: function () { | ||
return _predictWin.default; | ||
const rank = (_c = (_b = options.rank) != null ? _b : (_a = options.score) == null ? void 0 : _a.map((points) => -points)) != null ? _c : range(1, teams.length + 1); | ||
const [orderedTeams, tenet] = unwind(rank, processedTeams); | ||
const newRatings = model2(orderedTeams, __spreadProps(__spreadValues({}, options), { | ||
rank: sortBy(identity, rank) | ||
})); | ||
let [reorderedTeams] = unwind(tenet, newRatings); | ||
if (TAU && LIMIT_SIGMA) { | ||
reorderedTeams = reorderedTeams.map( | ||
(team, i) => team.map((p, j) => __spreadProps(__spreadValues({}, p), { | ||
sigma: Math.min(p.sigma, teams[i][j].sigma) | ||
})) | ||
); | ||
} | ||
}); | ||
Object.defineProperty(exports, "rate", { | ||
enumerable: true, | ||
get: function () { | ||
return _rate.default; | ||
} | ||
}); | ||
Object.defineProperty(exports, "rating", { | ||
enumerable: true, | ||
get: function () { | ||
return _rating.default; | ||
} | ||
}); | ||
var _rating = _interopRequireDefault(require("./rating")); | ||
var _rate = _interopRequireDefault(require("./rate")); | ||
var _ordinal = _interopRequireDefault(require("./ordinal")); | ||
var _predictWin = _interopRequireDefault(require("./predict-win")); | ||
var _predictDraw = _interopRequireDefault(require("./predict-draw")); | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
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return reorderedTeams; | ||
}; | ||
var rate_default = rate; | ||
// src/ordinal.ts | ||
var ordinal = (rating2, options = {}) => { | ||
const { sigma, mu } = rating2; | ||
const { Z } = constants_default(options); | ||
return mu - Z * sigma; | ||
}; | ||
var ordinal_default = ordinal; | ||
// src/predict-win.ts | ||
var predictWin = (teams, options = {}) => { | ||
const { teamRating: teamRating2 } = util_default(options); | ||
const { BETASQ } = constants_default(options); | ||
const teamRatings = teamRating2(teams); | ||
const n = teams.length; | ||
const denom = n * (n - 1) / 2; | ||
return teamRatings.map( | ||
([muA, sigmaSqA], i) => teamRatings.filter((_, q) => i !== q).map(([muB, sigmaSqB]) => phiMajor((muA - muB) / Math.sqrt(n * BETASQ + sigmaSqA + sigmaSqB))).reduce(sum, 0) / denom | ||
); | ||
}; | ||
var predict_win_default = predictWin; | ||
// src/predict-draw.ts | ||
import { flatten } from "ramda"; | ||
var predictWin2 = (teams, options = {}) => { | ||
const { teamRating: teamRating2 } = util_default(options); | ||
const { BETASQ, BETA } = constants_default(options); | ||
const n = teams.length; | ||
if (n === 0) return void 0; | ||
if (n === 1) return 1; | ||
const denom = n * (n - 1) / (n > 2 ? 1 : 2); | ||
const teamRatings = teamRating2(teams); | ||
const drawMargin = Math.sqrt(flatten(teams).length) * BETA * phiMajorInverse((1 + 1 / n) / 2); | ||
return Math.abs( | ||
teamRatings.map( | ||
([muA, sigmaSqA], i) => teamRatings.filter((_, q) => i !== q).map(([muB, sigmaSqB]) => { | ||
const sigmaBar = Math.sqrt(n * BETASQ + sigmaSqA + sigmaSqB); | ||
return phiMajor((drawMargin - muA + muB) / sigmaBar) - phiMajor((muA - muB - drawMargin) / sigmaBar); | ||
}) | ||
).flat().reduce(sum, 0) | ||
) / denom; | ||
}; | ||
var predict_draw_default = predictWin2; | ||
export { | ||
ordinal_default as ordinal, | ||
predict_draw_default as predictDraw, | ||
predict_win_default as predictWin, | ||
rate_default as rate, | ||
rating_default as rating | ||
}; | ||
//# sourceMappingURL=data:application/json;base64,{
  "version": 3,
  "sources": ["../src/constants.ts", "../src/rating.ts", "../src/rate.ts", "../src/util.ts", "../src/models/plackett-luce.ts", "../src/statistics.ts", "../src/ordinal.ts", "../src/predict-win.ts", "../src/predict-draw.ts"],
  "sourcesContent": ["import { Options } from './types'\n\nconst builder = (options: Options) => {\n  // i'd love to know of a better way to do this\n  const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 0.0001 } = options\n  const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options\n  const betaSq = beta ** 2\n\n  return {\n    SIGMA: sigma,\n    MU: mu,\n    EPSILON: epsilon,\n    TWOBETASQ: 2 * betaSq,\n    BETA: beta,\n    BETASQ: betaSq,\n    Z: z,\n    TAU: tau,\n    LIMIT_SIGMA: limitSigma,\n  }\n}\n\nexport default builder\n", "import constants from './constants'\nimport { Options, Rating } from './types'\n\nconst rating = (init?: { mu?: number; sigma?: number }, options: Options = {}): Rating => {\n  const { MU: mu, SIGMA: sigma } = constants({ ...options, ...init })\n  return { mu, sigma }\n}\n\nexport default rating\n", "import { sortBy, identity, range } from 'ramda'\nimport unwind from 'sort-unwind'\n\nimport { Rating, Options, Team } from './types'\nimport constants from './constants'\nimport { plackettLuce } from './models'\n\nconst rate = (teams: Team[], options: Options = {}): Team[] => {\n  const { LIMIT_SIGMA, TAU } = constants(options)\n  const { model = plackettLuce } = options\n  let processedTeams = teams\n\n  // if tau is provided, use additive dynamics factor to prevent sigma from dropping too low.\n  // using this will ensure the rating will stay more pliable after many games\n  if (options.tau) {\n    const tauSquared = TAU * TAU\n    processedTeams = teams.map((team) =>\n      team.map((p) => ({\n        ...p,\n        sigma: Math.sqrt(p.sigma * p.sigma + tauSquared),\n      }))\n    )\n  }\n\n  // if rank provided, use it, otherwise transition scores and use that\n  const rank = options.rank ?? options.score?.map((points) => -points) ?? range(1, teams.length + 1)\n\n  const [orderedTeams, tenet] = unwind(rank, processedTeams)\n  const newRatings = model(orderedTeams, {\n    ...options,\n    rank: sortBy(identity, rank),\n  })\n  let [reorderedTeams] = unwind(tenet, newRatings)\n\n  // limitSigma prevents sigma from ever going up which can happen when using a tau value.\n  // this helps prevent ordinal from ever dropping after winning a game which can feel unfair\n  if (TAU && LIMIT_SIGMA) {\n    reorderedTeams = reorderedTeams.map((team: Rating[], i: number) =>\n      team.map((p, j) => ({\n        ...p,\n        sigma: Math.min(p.sigma, teams[i][j].sigma),\n      }))\n    )\n  }\n\n  return reorderedTeams\n}\n\nexport default rate\n", "import { zip } from 'ramda'\nimport constants from './constants'\nimport { Rating, Options, Gamma, Team, Rank } from './types'\n\nexport type TeamMu = number\n\nexport type TeamSigmaSq = number\n\nexport type TeamRating = [TeamMu, TeamSigmaSq, Team, Rank]\n\nexport const sum = (a: number, b: number) => a + b\n\nexport const score = (q: number, i: number) => {\n  if (q < i) {\n    return 0.0\n  }\n  if (q > i) {\n    return 1.0\n  }\n  // q === i\n  return 0.5\n}\n\nexport const rankings = (teams: Team[], rank: number[] = []) => {\n  const teamScores = teams.map((_, i) => rank[i] || i)\n  const outRank = new Array(teams.length)\n\n  let s = 0\n  for (let j = 0; j < teamScores.length; j += 1) {\n    if (j > 0 && teamScores[j - 1] < teamScores[j]) {\n      s = j\n    }\n    outRank[j] = s\n  }\n  return outRank\n}\n\n// this is basically shared code, precomputed for every model\nconst teamRating =\n  (options: Options) =>\n  (game: Team[]): TeamRating[] => {\n    const rank = rankings(game, options.rank)\n    return game.map((team, i) => [\n      // mu[i]\n      team.map(({ mu }) => mu).reduce(sum, 0),\n      // sigma^2[i]\n      team.map(({ sigma }) => sigma * sigma).reduce(sum, 0),\n      // (original team data)\n      team,\n      // rank[i]\n      rank[i],\n    ])\n  }\n\nexport const ladderPairs = <T>(ranks: T[]): T[][] => {\n  const size = ranks.length\n  const left = [undefined, ...ranks.slice(0, size - 1)]\n  const right = [...ranks.slice(1), undefined]\n  return zip(left, right).map(([l, r]) => {\n    if (l !== undefined && r !== undefined) return [l, r]\n    if (l !== undefined && r === undefined) return [l]\n    if (l === undefined && r !== undefined) return [r]\n    return [] // this should really only happen when size === 1\n  })\n}\n\nconst utilC = (options: Options) => {\n  const { BETASQ } = constants(options)\n  return (teamRatings: TeamRating[]) =>\n    Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0))\n}\n\nexport const utilSumQ = (teamRatings: TeamRating[], c: number) =>\n  teamRatings.map(([_qMu, _qSigmaSq, _qTeam, qRank]) =>\n    teamRatings\n      .filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank)\n      .map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c))\n      .reduce(sum, 0)\n  )\n\nexport const utilA = (teamRatings: TeamRating[]) =>\n  teamRatings.map(\n    ([_iMu, _iSigmaSq, _iTeam, iRank]) =>\n      teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length\n  )\n\nexport const gamma = (options: Options): Gamma =>\n  options.gamma ??\n  // default to iSigma / c\n  ((c: number, _k: number, _mu: number, sigmaSq: number, _team: Rating[], _qRank: number) => Math.sqrt(sigmaSq) / c)\n\nexport default (options: Options) => ({\n  utilC: utilC(options),\n  teamRating: teamRating(options),\n  gamma: gamma(options),\n})\n", "import util, { utilSumQ, utilA } from '../util'\nimport constants from '../constants'\nimport { Rating, Options, Model } from '../types'\n\nconst model: Model = (game: Rating[][], options: Options = {}) => {\n  const { EPSILON } = constants(options)\n  const { utilC, teamRating, gamma } = util(options)\n  const teamRatings = teamRating(game)\n  const c = utilC(teamRatings)\n  const sumQ = utilSumQ(teamRatings, c)\n  const a = utilA(teamRatings)\n\n  return teamRatings.map((iTeamRating, i) => {\n    const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating\n    const iMuOverCe = Math.exp(iMu / c) // tmp1\n    const [omegaSum, deltaSum] = teamRatings\n      .filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => qRank <= iRank)\n      .reduce(\n        ([omega, delta], [_], q) => {\n          const quotient = iMuOverCe / sumQ[q]\n          return [omega + (i === q ? 1 - quotient : -quotient) / a[q], delta + (quotient * (1 - quotient)) / a[q]]\n        },\n        [0, 0]\n      )\n\n    const iGamma = gamma(c, teamRatings.length, ...iTeamRating)\n    const iOmega = omegaSum * (iSigmaSq / c)\n    const iDelta = iGamma * deltaSum * (iSigmaSq / c ** 2)\n\n    return iTeam.map(({ mu, sigma }) => ({\n      mu: mu + (sigma ** 2 / iSigmaSq) * iOmega,\n      sigma: sigma * Math.sqrt(Math.max(1 - (sigma ** 2 / iSigmaSq) * iDelta, EPSILON)),\n    }))\n  })\n}\n\nexport default model\n", "import gaussian from 'gaussian'\n\n// use a standard normal distribution - mean of zero, stddev/variance of one\nconst normal = gaussian(0, 1)\n\nexport const phiMajor = (x: number) => normal.cdf(x)\n\nexport const phiMajorInverse = (x: number) => normal.ppf(x)\n\nexport const phiMinor = (x: number) => normal.pdf(x)\n\nexport const v = (x: number, t: number) => {\n  const xt = x - t\n  const denom = phiMajor(xt)\n  return denom < Number.EPSILON ? -xt : phiMinor(xt) / denom\n}\n\nexport const w = (x: number, t: number) => {\n  const xt = x - t\n  const denom = phiMajor(xt)\n  if (denom < Number.EPSILON) {\n    return x < 0 ? 1 : 0\n  }\n  return v(x, t) * (v(x, t) + xt)\n}\n\nexport const vt = (x: number, t: number) => {\n  const xx = Math.abs(x)\n  const b = phiMajor(t - xx) - phiMajor(-t - xx)\n  if (b < 1e-5) {\n    if (x < 0) return -x - t\n    return -x + t\n  }\n  const a = phiMinor(-t - xx) - phiMinor(t - xx)\n  return (x < 0 ? -a : a) / b\n}\n\nexport const wt = (x: number, t: number) => {\n  const xx = Math.abs(x)\n  const b = phiMajor(t - xx) - phiMajor(-t - xx)\n  return b < Number.EPSILON\n    ? 1.0\n    : ((t - xx) * phiMinor(t - xx) + (t + xx) * phiMinor(-t - xx)) / b + vt(x, t) * vt(x, t)\n}\n", "import constants from './constants'\nimport { Rating, Options } from './types'\n\nconst ordinal = (rating: Rating, options: Options = {}): number => {\n  const { sigma, mu } = rating\n  const { Z } = constants(options)\n  return mu - Z * sigma\n}\n\nexport default ordinal\n", "import constants from './constants'\nimport util, { sum } from './util'\nimport { phiMajor } from './statistics'\nimport { Options, Team } from './types'\n\nconst predictWin = (teams: Team[], options: Options = {}) => {\n  const { teamRating } = util(options)\n  const { BETASQ } = constants(options)\n\n  const teamRatings = teamRating(teams)\n  const n = teams.length\n  const denom = (n * (n - 1)) / 2\n\n  return teamRatings.map(\n    ([muA, sigmaSqA], i) =>\n      teamRatings\n        .filter((_, q) => i !== q)\n        .map(([muB, sigmaSqB]) => phiMajor((muA - muB) / Math.sqrt(n * BETASQ + sigmaSqA + sigmaSqB)))\n        .reduce(sum, 0) / denom\n  )\n}\n\nexport default predictWin\n", "import { flatten } from 'ramda'\nimport constants from './constants'\nimport util, { sum } from './util'\nimport { phiMajor, phiMajorInverse } from './statistics'\nimport { Options, Team } from './types'\n\nconst predictWin = (teams: Team[], options: Options = {}) => {\n  const { teamRating } = util(options)\n  const { BETASQ, BETA } = constants(options)\n\n  const n = teams.length\n  if (n === 0) return undefined\n  if (n === 1) return 1\n\n  const denom = (n * (n - 1)) / (n > 2 ? 1 : 2)\n  const teamRatings = teamRating(teams)\n  const drawMargin = Math.sqrt(flatten(teams).length) * BETA * phiMajorInverse((1 + 1 / n) / 2)\n\n  return (\n    Math.abs(\n      teamRatings\n        .map(([muA, sigmaSqA], i) =>\n          teamRatings\n            .filter((_, q) => i !== q)\n            .map(([muB, sigmaSqB]) => {\n              const sigmaBar = Math.sqrt(n * BETASQ + sigmaSqA + sigmaSqB)\n              return phiMajor((drawMargin - muA + muB) / sigmaBar) - phiMajor((muA - muB - drawMargin) / sigmaBar)\n            })\n        )\n        .flat()\n        .reduce(sum, 0)\n    ) / denom\n  )\n}\n\nexport default predictWin\n"],
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  "names": ["utilC", "teamRating", "gamma", "model", "rating", "teamRating", "predictWin", "teamRating"]
}
 |
@@ -1,3 +0,5 @@ | ||
import { Model } from '../types'; | ||
import { Model } from '../types.js'; | ||
declare const model: Model; | ||
export default model; | ||
export { model as default }; |
@@ -1,35 +0,97 @@ | ||
"use strict"; | ||
// src/util.ts | ||
import { zip } from "ramda"; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
// src/util.ts | ||
var sum = (a, b) => a + b; | ||
var score = (q, i) => { | ||
if (q < i) { | ||
return 0; | ||
} | ||
if (q > i) { | ||
return 1; | ||
} | ||
return 0.5; | ||
}; | ||
var rankings = (teams, rank = []) => { | ||
const teamScores = teams.map((_, i) => rank[i] || i); | ||
const outRank = new Array(teams.length); | ||
let s = 0; | ||
for (let j = 0; j < teamScores.length; j += 1) { | ||
if (j > 0 && teamScores[j - 1] < teamScores[j]) { | ||
s = j; | ||
} | ||
outRank[j] = s; | ||
} | ||
return outRank; | ||
}; | ||
var teamRating = (options) => (game) => { | ||
const rank = rankings(game, options.rank); | ||
return game.map((team, i) => [ | ||
// mu[i] | ||
team.map(({ mu }) => mu).reduce(sum, 0), | ||
// sigma^2[i] | ||
team.map(({ sigma }) => sigma * sigma).reduce(sum, 0), | ||
// (original team data) | ||
team, | ||
// rank[i] | ||
rank[i] | ||
]); | ||
}; | ||
var utilC = (options) => { | ||
const { BETASQ } = constants_default(options); | ||
return (teamRatings) => Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0)); | ||
}; | ||
var gamma = (options) => { | ||
var _a; | ||
return (_a = options.gamma) != null ? _a : ( | ||
// default to iSigma / c | ||
(c, _k, _mu, sigmaSq, _team, _qRank) => Math.sqrt(sigmaSq) / c | ||
); | ||
}; | ||
var util_default = (options) => ({ | ||
utilC: utilC(options), | ||
teamRating: teamRating(options), | ||
gamma: gamma(options) | ||
}); | ||
exports.default = void 0; | ||
var _util = _interopRequireWildcard(require("../util")); | ||
var _constants = _interopRequireDefault(require("../constants")); | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); } | ||
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; } | ||
const model = (game, options = {}) => { | ||
const { | ||
TWOBETASQ, | ||
EPSILON | ||
} = (0, _constants.default)(options); | ||
const { | ||
teamRating, | ||
gamma | ||
} = (0, _util.default)(options); | ||
const teamRatings = teamRating(game); | ||
// src/models/bradley-terry-full.ts | ||
var model = (game, options = {}) => { | ||
const { TWOBETASQ, EPSILON } = constants_default(options); | ||
const { teamRating: teamRating2, gamma: gamma2 } = util_default(options); | ||
const teamRatings = teamRating2(game); | ||
return teamRatings.map((iTeamRating, i) => { | ||
const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating; | ||
const [iOmega, iDelta] = teamRatings.filter((_, q) => q !== i).reduce(([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => { | ||
const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ); | ||
const piq = 1 / (1 + Math.exp((qMu - iMu) / ciq)); | ||
const sigSqToCiq = iSigmaSq / ciq; | ||
const iGamma = gamma(ciq, teamRatings.length, ...iTeamRating); | ||
return [omega + sigSqToCiq * ((0, _util.score)(qRank, iRank) - piq), delta + iGamma * sigSqToCiq / ciq * piq * (1 - piq)]; | ||
}, [0, 0]); | ||
return iTeam.map(({ | ||
mu, | ||
sigma | ||
}) => { | ||
const [iOmega, iDelta] = teamRatings.filter((_, q) => q !== i).reduce( | ||
([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => { | ||
const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ); | ||
const piq = 1 / (1 + Math.exp((qMu - iMu) / ciq)); | ||
const sigSqToCiq = iSigmaSq / ciq; | ||
const iGamma = gamma2(ciq, teamRatings.length, ...iTeamRating); | ||
return [ | ||
omega + sigSqToCiq * (score(qRank, iRank) - piq), | ||
delta + iGamma * sigSqToCiq / ciq * piq * (1 - piq) | ||
]; | ||
}, | ||
[0, 0] | ||
); | ||
return iTeam.map(({ mu, sigma }) => { | ||
const sigmaSq = sigma * sigma; | ||
@@ -43,3 +105,6 @@ return { | ||
}; | ||
var _default = exports.default = model; | ||
//# 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| ||
var bradley_terry_full_default = model; | ||
export { | ||
bradley_terry_full_default as default | ||
}; | ||
//# sourceMappingURL=data:application/json;base64,{
  "version": 3,
  "sources": ["../../src/util.ts", "../../src/constants.ts", "../../src/models/bradley-terry-full.ts"],
  "sourcesContent": ["import { zip } from 'ramda'\nimport constants from './constants'\nimport { Rating, Options, Gamma, Team, Rank } from './types'\n\nexport type TeamMu = number\n\nexport type TeamSigmaSq = number\n\nexport type TeamRating = [TeamMu, TeamSigmaSq, Team, Rank]\n\nexport const sum = (a: number, b: number) => a + b\n\nexport const score = (q: number, i: number) => {\n  if (q < i) {\n    return 0.0\n  }\n  if (q > i) {\n    return 1.0\n  }\n  // q === i\n  return 0.5\n}\n\nexport const rankings = (teams: Team[], rank: number[] = []) => {\n  const teamScores = teams.map((_, i) => rank[i] || i)\n  const outRank = new Array(teams.length)\n\n  let s = 0\n  for (let j = 0; j < teamScores.length; j += 1) {\n    if (j > 0 && teamScores[j - 1] < teamScores[j]) {\n      s = j\n    }\n    outRank[j] = s\n  }\n  return outRank\n}\n\n// this is basically shared code, precomputed for every model\nconst teamRating =\n  (options: Options) =>\n  (game: Team[]): TeamRating[] => {\n    const rank = rankings(game, options.rank)\n    return game.map((team, i) => [\n      // mu[i]\n      team.map(({ mu }) => mu).reduce(sum, 0),\n      // sigma^2[i]\n      team.map(({ sigma }) => sigma * sigma).reduce(sum, 0),\n      // (original team data)\n      team,\n      // rank[i]\n      rank[i],\n    ])\n  }\n\nexport const ladderPairs = <T>(ranks: T[]): T[][] => {\n  const size = ranks.length\n  const left = [undefined, ...ranks.slice(0, size - 1)]\n  const right = [...ranks.slice(1), undefined]\n  return zip(left, right).map(([l, r]) => {\n    if (l !== undefined && r !== undefined) return [l, r]\n    if (l !== undefined && r === undefined) return [l]\n    if (l === undefined && r !== undefined) return [r]\n    return [] // this should really only happen when size === 1\n  })\n}\n\nconst utilC = (options: Options) => {\n  const { BETASQ } = constants(options)\n  return (teamRatings: TeamRating[]) =>\n    Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0))\n}\n\nexport const utilSumQ = (teamRatings: TeamRating[], c: number) =>\n  teamRatings.map(([_qMu, _qSigmaSq, _qTeam, qRank]) =>\n    teamRatings\n      .filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank)\n      .map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c))\n      .reduce(sum, 0)\n  )\n\nexport const utilA = (teamRatings: TeamRating[]) =>\n  teamRatings.map(\n    ([_iMu, _iSigmaSq, _iTeam, iRank]) =>\n      teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length\n  )\n\nexport const gamma = (options: Options): Gamma =>\n  options.gamma ??\n  // default to iSigma / c\n  ((c: number, _k: number, _mu: number, sigmaSq: number, _team: Rating[], _qRank: number) => Math.sqrt(sigmaSq) / c)\n\nexport default (options: Options) => ({\n  utilC: utilC(options),\n  teamRating: teamRating(options),\n  gamma: gamma(options),\n})\n", "import { Options } from './types'\n\nconst builder = (options: Options) => {\n  // i'd love to know of a better way to do this\n  const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 0.0001 } = options\n  const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options\n  const betaSq = beta ** 2\n\n  return {\n    SIGMA: sigma,\n    MU: mu,\n    EPSILON: epsilon,\n    TWOBETASQ: 2 * betaSq,\n    BETA: beta,\n    BETASQ: betaSq,\n    Z: z,\n    TAU: tau,\n    LIMIT_SIGMA: limitSigma,\n  }\n}\n\nexport default builder\n", "import util, { score } from '../util'\nimport constants from '../constants'\nimport { Rating, Options, Model } from '../types'\n\nconst model: Model = (game: Rating[][], options: Options = {}) => {\n  const { TWOBETASQ, EPSILON } = constants(options)\n  const { teamRating, gamma } = util(options)\n  const teamRatings = teamRating(game)\n\n  return teamRatings.map((iTeamRating, i) => {\n    const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating\n    const [iOmega, iDelta] = teamRatings\n      .filter((_, q) => q !== i)\n      .reduce(\n        ([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => {\n          const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ)\n          const piq = 1 / (1 + Math.exp((qMu - iMu) / ciq))\n          const sigSqToCiq = iSigmaSq / ciq\n          const iGamma = gamma(ciq, teamRatings.length, ...iTeamRating)\n\n          return [\n            omega + sigSqToCiq * (score(qRank, iRank) - piq),\n            delta + ((iGamma * sigSqToCiq) / ciq) * piq * (1 - piq),\n          ]\n        },\n        [0, 0]\n      )\n\n    return iTeam.map(({ mu, sigma }) => {\n      const sigmaSq = sigma * sigma\n      return {\n        mu: mu + (sigmaSq / iSigmaSq) * iOmega,\n        sigma: sigma * Math.sqrt(Math.max(1 - (sigmaSq / iSigmaSq) * iDelta, EPSILON)),\n      }\n    })\n  })\n}\n\nexport default model\n"],
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  "names": ["teamRating", "gamma"]
}
 |
@@ -1,3 +0,5 @@ | ||
import { Model } from '../types'; | ||
import { Model } from '../types.js'; | ||
declare const model: Model; | ||
export default model; | ||
export { model as default }; |
@@ -1,37 +0,112 @@ | ||
"use strict"; | ||
// src/models/bradley-terry-part.ts | ||
import { zip as zip2 } from "ramda"; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
// src/util.ts | ||
import { zip } from "ramda"; | ||
// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
// src/util.ts | ||
var sum = (a, b) => a + b; | ||
var score = (q, i) => { | ||
if (q < i) { | ||
return 0; | ||
} | ||
if (q > i) { | ||
return 1; | ||
} | ||
return 0.5; | ||
}; | ||
var rankings = (teams, rank = []) => { | ||
const teamScores = teams.map((_, i) => rank[i] || i); | ||
const outRank = new Array(teams.length); | ||
let s = 0; | ||
for (let j = 0; j < teamScores.length; j += 1) { | ||
if (j > 0 && teamScores[j - 1] < teamScores[j]) { | ||
s = j; | ||
} | ||
outRank[j] = s; | ||
} | ||
return outRank; | ||
}; | ||
var teamRating = (options) => (game) => { | ||
const rank = rankings(game, options.rank); | ||
return game.map((team, i) => [ | ||
// mu[i] | ||
team.map(({ mu }) => mu).reduce(sum, 0), | ||
// sigma^2[i] | ||
team.map(({ sigma }) => sigma * sigma).reduce(sum, 0), | ||
// (original team data) | ||
team, | ||
// rank[i] | ||
rank[i] | ||
]); | ||
}; | ||
var ladderPairs = (ranks) => { | ||
const size = ranks.length; | ||
const left = [void 0, ...ranks.slice(0, size - 1)]; | ||
const right = [...ranks.slice(1), void 0]; | ||
return zip(left, right).map(([l, r]) => { | ||
if (l !== void 0 && r !== void 0) return [l, r]; | ||
if (l !== void 0 && r === void 0) return [l]; | ||
if (l === void 0 && r !== void 0) return [r]; | ||
return []; | ||
}); | ||
}; | ||
var utilC = (options) => { | ||
const { BETASQ } = constants_default(options); | ||
return (teamRatings) => Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0)); | ||
}; | ||
var gamma = (options) => { | ||
var _a; | ||
return (_a = options.gamma) != null ? _a : ( | ||
// default to iSigma / c | ||
(c, _k, _mu, sigmaSq, _team, _qRank) => Math.sqrt(sigmaSq) / c | ||
); | ||
}; | ||
var util_default = (options) => ({ | ||
utilC: utilC(options), | ||
teamRating: teamRating(options), | ||
gamma: gamma(options) | ||
}); | ||
exports.default = void 0; | ||
var _ramda = require("ramda"); | ||
var _util = _interopRequireWildcard(require("../util")); | ||
var _constants = _interopRequireDefault(require("../constants")); | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); } | ||
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; } | ||
const model = (game, options = {}) => { | ||
const { | ||
TWOBETASQ, | ||
EPSILON | ||
} = (0, _constants.default)(options); | ||
const { | ||
teamRating, | ||
gamma | ||
} = (0, _util.default)(options); | ||
const teamRatings = teamRating(game); | ||
const adjacentTeams = (0, _util.ladderPairs)(teamRatings); | ||
return (0, _ramda.zip)(teamRatings, adjacentTeams).map(([iTeamRating, iAdjacents]) => { | ||
// src/models/bradley-terry-part.ts | ||
var model = (game, options = {}) => { | ||
const { TWOBETASQ, EPSILON } = constants_default(options); | ||
const { teamRating: teamRating2, gamma: gamma2 } = util_default(options); | ||
const teamRatings = teamRating2(game); | ||
const adjacentTeams = ladderPairs(teamRatings); | ||
return zip2(teamRatings, adjacentTeams).map(([iTeamRating, iAdjacents]) => { | ||
const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating; | ||
const [iOmega, iDelta] = iAdjacents.reduce(([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => { | ||
const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ); | ||
const piq = 1 / (1 + Math.exp((qMu - iMu) / ciq)); | ||
const sigSqToCiq = iSigmaSq / ciq; | ||
const iGamma = gamma(ciq, teamRatings.length, ...iTeamRating); | ||
return [omega + sigSqToCiq * ((0, _util.score)(qRank, iRank) - piq), delta + iGamma * sigSqToCiq / ciq * piq * (1 - piq)]; | ||
}, [0, 0]); | ||
return iTeam.map(({ | ||
mu, | ||
sigma | ||
}) => { | ||
const [iOmega, iDelta] = iAdjacents.reduce( | ||
([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => { | ||
const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ); | ||
const piq = 1 / (1 + Math.exp((qMu - iMu) / ciq)); | ||
const sigSqToCiq = iSigmaSq / ciq; | ||
const iGamma = gamma2(ciq, teamRatings.length, ...iTeamRating); | ||
return [ | ||
omega + sigSqToCiq * (score(qRank, iRank) - piq), | ||
delta + iGamma * sigSqToCiq / ciq * piq * (1 - piq) | ||
]; | ||
}, | ||
[0, 0] | ||
); | ||
return iTeam.map(({ mu, sigma }) => { | ||
const sigmaSq = sigma * sigma; | ||
@@ -45,3 +120,6 @@ return { | ||
}; | ||
var _default = exports.default = model; | ||
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 | ||
var bradley_terry_part_default = model; | ||
export { | ||
bradley_terry_part_default as default | ||
}; | ||
//# sourceMappingURL=data:application/json;base64,{
  "version": 3,
  "sources": ["../../src/models/bradley-terry-part.ts", "../../src/util.ts", "../../src/constants.ts"],
  "sourcesContent": ["import { zip } from 'ramda'\nimport util, { score, ladderPairs } from '../util'\nimport constants from '../constants'\nimport { Model, Rating } from '../types'\n\nconst model: Model = (game: Rating[][], options = {}) => {\n  const { TWOBETASQ, EPSILON } = constants(options)\n  const { teamRating, gamma } = util(options)\n\n  const teamRatings = teamRating(game)\n  const adjacentTeams = ladderPairs(teamRatings)\n\n  return zip(teamRatings, adjacentTeams).map(([iTeamRating, iAdjacents]) => {\n    const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating\n    const [iOmega, iDelta] = iAdjacents.reduce(\n      ([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => {\n        const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ)\n        const piq = 1 / (1 + Math.exp((qMu - iMu) / ciq))\n        const sigSqToCiq = iSigmaSq / ciq\n        const iGamma = gamma(ciq, teamRatings.length, ...iTeamRating)\n\n        return [\n          omega + sigSqToCiq * (score(qRank, iRank) - piq),\n          delta + ((iGamma * sigSqToCiq) / ciq) * piq * (1 - piq),\n        ]\n      },\n      [0, 0]\n    )\n\n    return iTeam.map(({ mu, sigma }) => {\n      const sigmaSq = sigma * sigma\n      return {\n        mu: mu + (sigmaSq / iSigmaSq) * iOmega,\n        sigma: sigma * Math.sqrt(Math.max(1 - (sigmaSq / iSigmaSq) * iDelta, EPSILON)),\n      }\n    })\n  })\n}\n\nexport default model\n", "import { zip } from 'ramda'\nimport constants from './constants'\nimport { Rating, Options, Gamma, Team, Rank } from './types'\n\nexport type TeamMu = number\n\nexport type TeamSigmaSq = number\n\nexport type TeamRating = [TeamMu, TeamSigmaSq, Team, Rank]\n\nexport const sum = (a: number, b: number) => a + b\n\nexport const score = (q: number, i: number) => {\n  if (q < i) {\n    return 0.0\n  }\n  if (q > i) {\n    return 1.0\n  }\n  // q === i\n  return 0.5\n}\n\nexport const rankings = (teams: Team[], rank: number[] = []) => {\n  const teamScores = teams.map((_, i) => rank[i] || i)\n  const outRank = new Array(teams.length)\n\n  let s = 0\n  for (let j = 0; j < teamScores.length; j += 1) {\n    if (j > 0 && teamScores[j - 1] < teamScores[j]) {\n      s = j\n    }\n    outRank[j] = s\n  }\n  return outRank\n}\n\n// this is basically shared code, precomputed for every model\nconst teamRating =\n  (options: Options) =>\n  (game: Team[]): TeamRating[] => {\n    const rank = rankings(game, options.rank)\n    return game.map((team, i) => [\n      // mu[i]\n      team.map(({ mu }) => mu).reduce(sum, 0),\n      // sigma^2[i]\n      team.map(({ sigma }) => sigma * sigma).reduce(sum, 0),\n      // (original team data)\n      team,\n      // rank[i]\n      rank[i],\n    ])\n  }\n\nexport const ladderPairs = <T>(ranks: T[]): T[][] => {\n  const size = ranks.length\n  const left = [undefined, ...ranks.slice(0, size - 1)]\n  const right = [...ranks.slice(1), undefined]\n  return zip(left, right).map(([l, r]) => {\n    if (l !== undefined && r !== undefined) return [l, r]\n    if (l !== undefined && r === undefined) return [l]\n    if (l === undefined && r !== undefined) return [r]\n    return [] // this should really only happen when size === 1\n  })\n}\n\nconst utilC = (options: Options) => {\n  const { BETASQ } = constants(options)\n  return (teamRatings: TeamRating[]) =>\n    Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0))\n}\n\nexport const utilSumQ = (teamRatings: TeamRating[], c: number) =>\n  teamRatings.map(([_qMu, _qSigmaSq, _qTeam, qRank]) =>\n    teamRatings\n      .filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank)\n      .map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c))\n      .reduce(sum, 0)\n  )\n\nexport const utilA = (teamRatings: TeamRating[]) =>\n  teamRatings.map(\n    ([_iMu, _iSigmaSq, _iTeam, iRank]) =>\n      teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length\n  )\n\nexport const gamma = (options: Options): Gamma =>\n  options.gamma ??\n  // default to iSigma / c\n  ((c: number, _k: number, _mu: number, sigmaSq: number, _team: Rating[], _qRank: number) => Math.sqrt(sigmaSq) / c)\n\nexport default (options: Options) => ({\n  utilC: utilC(options),\n  teamRating: teamRating(options),\n  gamma: gamma(options),\n})\n", "import { Options } from './types'\n\nconst builder = (options: Options) => {\n  // i'd love to know of a better way to do this\n  const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 0.0001 } = options\n  const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options\n  const betaSq = beta ** 2\n\n  return {\n    SIGMA: sigma,\n    MU: mu,\n    EPSILON: epsilon,\n    TWOBETASQ: 2 * betaSq,\n    BETA: beta,\n    BETASQ: betaSq,\n    Z: z,\n    TAU: tau,\n    LIMIT_SIGMA: limitSigma,\n  }\n}\n\nexport default builder\n"],
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  "names": ["zip", "teamRating", "gamma", "zip"]
}
 |
@@ -1,5 +0,6 @@ | ||
export { default as plackettLuce } from './plackett-luce'; | ||
export { default as bradleyTerryFull } from './bradley-terry-full'; | ||
export { default as bradleyTerryPart } from './bradley-terry-part'; | ||
export { default as thurstoneMostellerFull } from './thurstone-mosteller-full'; | ||
export { default as thurstoneMostellerPart } from './thurstone-mosteller-part'; | ||
export { default as plackettLuce } from './plackett-luce.js'; | ||
export { default as bradleyTerryFull } from './bradley-terry-full.js'; | ||
export { default as bradleyTerryPart } from './bradley-terry-part.js'; | ||
export { default as thurstoneMostellerFull } from './thurstone-mosteller-full.js'; | ||
export { default as thurstoneMostellerPart } from './thurstone-mosteller-part.js'; | ||
import '../types.js'; |
@@ -1,42 +0,304 @@ | ||
"use strict"; | ||
// src/util.ts | ||
import { zip } from "ramda"; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
}); | ||
Object.defineProperty(exports, "bradleyTerryFull", { | ||
enumerable: true, | ||
get: function () { | ||
return _bradleyTerryFull.default; | ||
// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
// src/util.ts | ||
var sum = (a, b) => a + b; | ||
var score = (q, i) => { | ||
if (q < i) { | ||
return 0; | ||
} | ||
}); | ||
Object.defineProperty(exports, "bradleyTerryPart", { | ||
enumerable: true, | ||
get: function () { | ||
return _bradleyTerryPart.default; | ||
if (q > i) { | ||
return 1; | ||
} | ||
}); | ||
Object.defineProperty(exports, "plackettLuce", { | ||
enumerable: true, | ||
get: function () { | ||
return _plackettLuce.default; | ||
return 0.5; | ||
}; | ||
var rankings = (teams, rank = []) => { | ||
const teamScores = teams.map((_, i) => rank[i] || i); | ||
const outRank = new Array(teams.length); | ||
let s = 0; | ||
for (let j = 0; j < teamScores.length; j += 1) { | ||
if (j > 0 && teamScores[j - 1] < teamScores[j]) { | ||
s = j; | ||
} | ||
outRank[j] = s; | ||
} | ||
return outRank; | ||
}; | ||
var teamRating = (options) => (game) => { | ||
const rank = rankings(game, options.rank); | ||
return game.map((team, i) => [ | ||
// mu[i] | ||
team.map(({ mu }) => mu).reduce(sum, 0), | ||
// sigma^2[i] | ||
team.map(({ sigma }) => sigma * sigma).reduce(sum, 0), | ||
// (original team data) | ||
team, | ||
// rank[i] | ||
rank[i] | ||
]); | ||
}; | ||
var ladderPairs = (ranks) => { | ||
const size = ranks.length; | ||
const left = [void 0, ...ranks.slice(0, size - 1)]; | ||
const right = [...ranks.slice(1), void 0]; | ||
return zip(left, right).map(([l, r]) => { | ||
if (l !== void 0 && r !== void 0) return [l, r]; | ||
if (l !== void 0 && r === void 0) return [l]; | ||
if (l === void 0 && r !== void 0) return [r]; | ||
return []; | ||
}); | ||
}; | ||
var utilC = (options) => { | ||
const { BETASQ } = constants_default(options); | ||
return (teamRatings) => Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0)); | ||
}; | ||
var utilSumQ = (teamRatings, c) => teamRatings.map( | ||
([_qMu, _qSigmaSq, _qTeam, qRank]) => teamRatings.filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank).map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c)).reduce(sum, 0) | ||
); | ||
var utilA = (teamRatings) => teamRatings.map( | ||
([_iMu, _iSigmaSq, _iTeam, iRank]) => teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length | ||
); | ||
var gamma = (options) => { | ||
var _a; | ||
return (_a = options.gamma) != null ? _a : ( | ||
// default to iSigma / c | ||
(c, _k, _mu, sigmaSq, _team, _qRank) => Math.sqrt(sigmaSq) / c | ||
); | ||
}; | ||
var util_default = (options) => ({ | ||
utilC: utilC(options), | ||
teamRating: teamRating(options), | ||
gamma: gamma(options) | ||
}); | ||
Object.defineProperty(exports, "thurstoneMostellerFull", { | ||
enumerable: true, | ||
get: function () { | ||
return _thurstoneMostellerFull.default; | ||
// src/models/plackett-luce.ts | ||
var model = (game, options = {}) => { | ||
const { EPSILON } = constants_default(options); | ||
const { utilC: utilC2, teamRating: teamRating2, gamma: gamma2 } = util_default(options); | ||
const teamRatings = teamRating2(game); | ||
const c = utilC2(teamRatings); | ||
const sumQ = utilSumQ(teamRatings, c); | ||
const a = utilA(teamRatings); | ||
return teamRatings.map((iTeamRating, i) => { | ||
const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating; | ||
const iMuOverCe = Math.exp(iMu / c); | ||
const [omegaSum, deltaSum] = teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => qRank <= iRank).reduce( | ||
([omega, delta], [_], q) => { | ||
const quotient = iMuOverCe / sumQ[q]; | ||
return [omega + (i === q ? 1 - quotient : -quotient) / a[q], delta + quotient * (1 - quotient) / a[q]]; | ||
}, | ||
[0, 0] | ||
); | ||
const iGamma = gamma2(c, teamRatings.length, ...iTeamRating); | ||
const iOmega = omegaSum * (iSigmaSq / c); | ||
const iDelta = iGamma * deltaSum * (iSigmaSq / c ** 2); | ||
return iTeam.map(({ mu, sigma }) => ({ | ||
mu: mu + sigma ** 2 / iSigmaSq * iOmega, | ||
sigma: sigma * Math.sqrt(Math.max(1 - sigma ** 2 / iSigmaSq * iDelta, EPSILON)) | ||
})); | ||
}); | ||
}; | ||
var plackett_luce_default = model; | ||
// src/models/bradley-terry-full.ts | ||
var model2 = (game, options = {}) => { | ||
const { TWOBETASQ, EPSILON } = constants_default(options); | ||
const { teamRating: teamRating2, gamma: gamma2 } = util_default(options); | ||
const teamRatings = teamRating2(game); | ||
return teamRatings.map((iTeamRating, i) => { | ||
const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating; | ||
const [iOmega, iDelta] = teamRatings.filter((_, q) => q !== i).reduce( | ||
([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => { | ||
const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ); | ||
const piq = 1 / (1 + Math.exp((qMu - iMu) / ciq)); | ||
const sigSqToCiq = iSigmaSq / ciq; | ||
const iGamma = gamma2(ciq, teamRatings.length, ...iTeamRating); | ||
return [ | ||
omega + sigSqToCiq * (score(qRank, iRank) - piq), | ||
delta + iGamma * sigSqToCiq / ciq * piq * (1 - piq) | ||
]; | ||
}, | ||
[0, 0] | ||
); | ||
return iTeam.map(({ mu, sigma }) => { | ||
const sigmaSq = sigma * sigma; | ||
return { | ||
mu: mu + sigmaSq / iSigmaSq * iOmega, | ||
sigma: sigma * Math.sqrt(Math.max(1 - sigmaSq / iSigmaSq * iDelta, EPSILON)) | ||
}; | ||
}); | ||
}); | ||
}; | ||
var bradley_terry_full_default = model2; | ||
// src/models/bradley-terry-part.ts | ||
import { zip as zip2 } from "ramda"; | ||
var model3 = (game, options = {}) => { | ||
const { TWOBETASQ, EPSILON } = constants_default(options); | ||
const { teamRating: teamRating2, gamma: gamma2 } = util_default(options); | ||
const teamRatings = teamRating2(game); | ||
const adjacentTeams = ladderPairs(teamRatings); | ||
return zip2(teamRatings, adjacentTeams).map(([iTeamRating, iAdjacents]) => { | ||
const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating; | ||
const [iOmega, iDelta] = iAdjacents.reduce( | ||
([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => { | ||
const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ); | ||
const piq = 1 / (1 + Math.exp((qMu - iMu) / ciq)); | ||
const sigSqToCiq = iSigmaSq / ciq; | ||
const iGamma = gamma2(ciq, teamRatings.length, ...iTeamRating); | ||
return [ | ||
omega + sigSqToCiq * (score(qRank, iRank) - piq), | ||
delta + iGamma * sigSqToCiq / ciq * piq * (1 - piq) | ||
]; | ||
}, | ||
[0, 0] | ||
); | ||
return iTeam.map(({ mu, sigma }) => { | ||
const sigmaSq = sigma * sigma; | ||
return { | ||
mu: mu + sigmaSq / iSigmaSq * iOmega, | ||
sigma: sigma * Math.sqrt(Math.max(1 - sigmaSq / iSigmaSq * iDelta, EPSILON)) | ||
}; | ||
}); | ||
}); | ||
}; | ||
var bradley_terry_part_default = model3; | ||
// src/statistics.ts | ||
import gaussian from "gaussian"; | ||
var normal = gaussian(0, 1); | ||
var phiMajor = (x) => normal.cdf(x); | ||
var phiMinor = (x) => normal.pdf(x); | ||
var v = (x, t) => { | ||
const xt = x - t; | ||
const denom = phiMajor(xt); | ||
return denom < Number.EPSILON ? -xt : phiMinor(xt) / denom; | ||
}; | ||
var w = (x, t) => { | ||
const xt = x - t; | ||
const denom = phiMajor(xt); | ||
if (denom < Number.EPSILON) { | ||
return x < 0 ? 1 : 0; | ||
} | ||
}); | ||
Object.defineProperty(exports, "thurstoneMostellerPart", { | ||
enumerable: true, | ||
get: function () { | ||
return _thurstoneMostellerPart.default; | ||
return v(x, t) * (v(x, t) + xt); | ||
}; | ||
var vt = (x, t) => { | ||
const xx = Math.abs(x); | ||
const b = phiMajor(t - xx) - phiMajor(-t - xx); | ||
if (b < 1e-5) { | ||
if (x < 0) return -x - t; | ||
return -x + t; | ||
} | ||
}); | ||
var _plackettLuce = _interopRequireDefault(require("./plackett-luce")); | ||
var _bradleyTerryFull = _interopRequireDefault(require("./bradley-terry-full")); | ||
var _bradleyTerryPart = _interopRequireDefault(require("./bradley-terry-part")); | ||
var _thurstoneMostellerFull = _interopRequireDefault(require("./thurstone-mosteller-full")); | ||
var _thurstoneMostellerPart = _interopRequireDefault(require("./thurstone-mosteller-part")); | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
//# sourceMappingURL=data:application/json;charset=utf-8;base64,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 | ||
const a = phiMinor(-t - xx) - phiMinor(t - xx); | ||
return (x < 0 ? -a : a) / b; | ||
}; | ||
var wt = (x, t) => { | ||
const xx = Math.abs(x); | ||
const b = phiMajor(t - xx) - phiMajor(-t - xx); | ||
return b < Number.EPSILON ? 1 : ((t - xx) * phiMinor(t - xx) + (t + xx) * phiMinor(-t - xx)) / b + vt(x, t) * vt(x, t); | ||
}; | ||
// src/models/thurstone-mosteller-full.ts | ||
var model4 = (game, options = {}) => { | ||
const { TWOBETASQ, EPSILON } = constants_default(options); | ||
const { teamRating: teamRating2, gamma: gamma2 } = util_default(options); | ||
const teamRatings = teamRating2(game); | ||
return teamRatings.map((iTeamRating, i) => { | ||
const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating; | ||
const [iOmega, iDelta] = teamRatings.filter((_, q) => i !== q).reduce( | ||
([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => { | ||
const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ); | ||
const deltaMu = (iMu - qMu) / ciq; | ||
const sigSqToCiq = iSigmaSq / ciq; | ||
const iGamma = gamma2(ciq, teamRatings.length, ...iTeamRating); | ||
if (qRank === iRank) { | ||
return [ | ||
omega + sigSqToCiq * vt(deltaMu, EPSILON / ciq), | ||
delta + iGamma * sigSqToCiq / ciq * wt(deltaMu, EPSILON / ciq) | ||
]; | ||
} | ||
const sign = qRank > iRank ? 1 : -1; | ||
return [ | ||
omega + sign * sigSqToCiq * v(sign * deltaMu, EPSILON / ciq), | ||
delta + iGamma * sigSqToCiq / ciq * w(sign * deltaMu, EPSILON / ciq) | ||
]; | ||
}, | ||
[0, 0] | ||
); | ||
return iTeam.map(({ mu, sigma }) => { | ||
const sigmaSq = sigma * sigma; | ||
return { | ||
mu: mu + sigmaSq / iSigmaSq * iOmega, | ||
sigma: sigma * Math.sqrt(Math.max(1 - sigmaSq / iSigmaSq * iDelta, EPSILON)) | ||
}; | ||
}); | ||
}); | ||
}; | ||
var thurstone_mosteller_full_default = model4; | ||
// src/models/thurstone-mosteller-part.ts | ||
import { zip as zip3 } from "ramda"; | ||
var model5 = (game, options = {}) => { | ||
const { TWOBETASQ, EPSILON } = constants_default(options); | ||
const { teamRating: teamRating2, gamma: gamma2 } = util_default(options); | ||
const teamRatings = teamRating2(game); | ||
const adjacentTeams = ladderPairs(teamRatings); | ||
return zip3(teamRatings, adjacentTeams).map(([iTeamRating, iAdjacents]) => { | ||
const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating; | ||
const [iOmega, iDelta] = iAdjacents.reduce( | ||
([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => { | ||
const ciq = 2 * Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ); | ||
const deltaMu = (iMu - qMu) / ciq; | ||
const sigSqToCiq = iSigmaSq / ciq; | ||
const iGamma = gamma2(ciq, teamRatings.length, ...iTeamRating); | ||
if (qRank === iRank) { | ||
return [ | ||
omega + sigSqToCiq * vt(deltaMu, EPSILON / ciq), | ||
delta + iGamma * sigSqToCiq / ciq * wt(deltaMu, EPSILON / ciq) | ||
]; | ||
} | ||
const sign = qRank > iRank ? 1 : -1; | ||
return [ | ||
omega + sign * sigSqToCiq * v(sign * deltaMu, EPSILON / ciq), | ||
delta + iGamma * sigSqToCiq / ciq * w(sign * deltaMu, EPSILON / ciq) | ||
]; | ||
}, | ||
[0, 0] | ||
); | ||
return iTeam.map(({ mu, sigma }) => { | ||
const sigmaSq = sigma * sigma; | ||
return { | ||
mu: mu + sigmaSq / iSigmaSq * iOmega, | ||
sigma: sigma * Math.sqrt(Math.max(1 - sigmaSq / iSigmaSq * iDelta, EPSILON)) | ||
}; | ||
}); | ||
}); | ||
}; | ||
var thurstone_mosteller_part_default = model5; | ||
export { | ||
bradley_terry_full_default as bradleyTerryFull, | ||
bradley_terry_part_default as bradleyTerryPart, | ||
plackett_luce_default as plackettLuce, | ||
thurstone_mosteller_full_default as thurstoneMostellerFull, | ||
thurstone_mosteller_part_default as thurstoneMostellerPart | ||
}; | ||
//# sourceMappingURL=data:application/json;base64,{
  "version": 3,
  "sources": ["../../src/util.ts", "../../src/constants.ts", "../../src/models/plackett-luce.ts", "../../src/models/bradley-terry-full.ts", "../../src/models/bradley-terry-part.ts", "../../src/statistics.ts", "../../src/models/thurstone-mosteller-full.ts", "../../src/models/thurstone-mosteller-part.ts"],
  "sourcesContent": ["import { zip } from 'ramda'\nimport constants from './constants'\nimport { Rating, Options, Gamma, Team, Rank } from './types'\n\nexport type TeamMu = number\n\nexport type TeamSigmaSq = number\n\nexport type TeamRating = [TeamMu, TeamSigmaSq, Team, Rank]\n\nexport const sum = (a: number, b: number) => a + b\n\nexport const score = (q: number, i: number) => {\n  if (q < i) {\n    return 0.0\n  }\n  if (q > i) {\n    return 1.0\n  }\n  // q === i\n  return 0.5\n}\n\nexport const rankings = (teams: Team[], rank: number[] = []) => {\n  const teamScores = teams.map((_, i) => rank[i] || i)\n  const outRank = new Array(teams.length)\n\n  let s = 0\n  for (let j = 0; j < teamScores.length; j += 1) {\n    if (j > 0 && teamScores[j - 1] < teamScores[j]) {\n      s = j\n    }\n    outRank[j] = s\n  }\n  return outRank\n}\n\n// this is basically shared code, precomputed for every model\nconst teamRating =\n  (options: Options) =>\n  (game: Team[]): TeamRating[] => {\n    const rank = rankings(game, options.rank)\n    return game.map((team, i) => [\n      // mu[i]\n      team.map(({ mu }) => mu).reduce(sum, 0),\n      // sigma^2[i]\n      team.map(({ sigma }) => sigma * sigma).reduce(sum, 0),\n      // (original team data)\n      team,\n      // rank[i]\n      rank[i],\n    ])\n  }\n\nexport const ladderPairs = <T>(ranks: T[]): T[][] => {\n  const size = ranks.length\n  const left = [undefined, ...ranks.slice(0, size - 1)]\n  const right = [...ranks.slice(1), undefined]\n  return zip(left, right).map(([l, r]) => {\n    if (l !== undefined && r !== undefined) return [l, r]\n    if (l !== undefined && r === undefined) return [l]\n    if (l === undefined && r !== undefined) return [r]\n    return [] // this should really only happen when size === 1\n  })\n}\n\nconst utilC = (options: Options) => {\n  const { BETASQ } = constants(options)\n  return (teamRatings: TeamRating[]) =>\n    Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0))\n}\n\nexport const utilSumQ = (teamRatings: TeamRating[], c: number) =>\n  teamRatings.map(([_qMu, _qSigmaSq, _qTeam, qRank]) =>\n    teamRatings\n      .filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank)\n      .map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c))\n      .reduce(sum, 0)\n  )\n\nexport const utilA = (teamRatings: TeamRating[]) =>\n  teamRatings.map(\n    ([_iMu, _iSigmaSq, _iTeam, iRank]) =>\n      teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length\n  )\n\nexport const gamma = (options: Options): Gamma =>\n  options.gamma ??\n  // default to iSigma / c\n  ((c: number, _k: number, _mu: number, sigmaSq: number, _team: Rating[], _qRank: number) => Math.sqrt(sigmaSq) / c)\n\nexport default (options: Options) => ({\n  utilC: utilC(options),\n  teamRating: teamRating(options),\n  gamma: gamma(options),\n})\n", "import { Options } from './types'\n\nconst builder = (options: Options) => {\n  // i'd love to know of a better way to do this\n  const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 0.0001 } = options\n  const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options\n  const betaSq = beta ** 2\n\n  return {\n    SIGMA: sigma,\n    MU: mu,\n    EPSILON: epsilon,\n    TWOBETASQ: 2 * betaSq,\n    BETA: beta,\n    BETASQ: betaSq,\n    Z: z,\n    TAU: tau,\n    LIMIT_SIGMA: limitSigma,\n  }\n}\n\nexport default builder\n", "import util, { utilSumQ, utilA } from '../util'\nimport constants from '../constants'\nimport { Rating, Options, Model } from '../types'\n\nconst model: Model = (game: Rating[][], options: Options = {}) => {\n  const { EPSILON } = constants(options)\n  const { utilC, teamRating, gamma } = util(options)\n  const teamRatings = teamRating(game)\n  const c = utilC(teamRatings)\n  const sumQ = utilSumQ(teamRatings, c)\n  const a = utilA(teamRatings)\n\n  return teamRatings.map((iTeamRating, i) => {\n    const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating\n    const iMuOverCe = Math.exp(iMu / c) // tmp1\n    const [omegaSum, deltaSum] = teamRatings\n      .filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => qRank <= iRank)\n      .reduce(\n        ([omega, delta], [_], q) => {\n          const quotient = iMuOverCe / sumQ[q]\n          return [omega + (i === q ? 1 - quotient : -quotient) / a[q], delta + (quotient * (1 - quotient)) / a[q]]\n        },\n        [0, 0]\n      )\n\n    const iGamma = gamma(c, teamRatings.length, ...iTeamRating)\n    const iOmega = omegaSum * (iSigmaSq / c)\n    const iDelta = iGamma * deltaSum * (iSigmaSq / c ** 2)\n\n    return iTeam.map(({ mu, sigma }) => ({\n      mu: mu + (sigma ** 2 / iSigmaSq) * iOmega,\n      sigma: sigma * Math.sqrt(Math.max(1 - (sigma ** 2 / iSigmaSq) * iDelta, EPSILON)),\n    }))\n  })\n}\n\nexport default model\n", "import util, { score } from '../util'\nimport constants from '../constants'\nimport { Rating, Options, Model } from '../types'\n\nconst model: Model = (game: Rating[][], options: Options = {}) => {\n  const { TWOBETASQ, EPSILON } = constants(options)\n  const { teamRating, gamma } = util(options)\n  const teamRatings = teamRating(game)\n\n  return teamRatings.map((iTeamRating, i) => {\n    const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating\n    const [iOmega, iDelta] = teamRatings\n      .filter((_, q) => q !== i)\n      .reduce(\n        ([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => {\n          const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ)\n          const piq = 1 / (1 + Math.exp((qMu - iMu) / ciq))\n          const sigSqToCiq = iSigmaSq / ciq\n          const iGamma = gamma(ciq, teamRatings.length, ...iTeamRating)\n\n          return [\n            omega + sigSqToCiq * (score(qRank, iRank) - piq),\n            delta + ((iGamma * sigSqToCiq) / ciq) * piq * (1 - piq),\n          ]\n        },\n        [0, 0]\n      )\n\n    return iTeam.map(({ mu, sigma }) => {\n      const sigmaSq = sigma * sigma\n      return {\n        mu: mu + (sigmaSq / iSigmaSq) * iOmega,\n        sigma: sigma * Math.sqrt(Math.max(1 - (sigmaSq / iSigmaSq) * iDelta, EPSILON)),\n      }\n    })\n  })\n}\n\nexport default model\n", "import { zip } from 'ramda'\nimport util, { score, ladderPairs } from '../util'\nimport constants from '../constants'\nimport { Model, Rating } from '../types'\n\nconst model: Model = (game: Rating[][], options = {}) => {\n  const { TWOBETASQ, EPSILON } = constants(options)\n  const { teamRating, gamma } = util(options)\n\n  const teamRatings = teamRating(game)\n  const adjacentTeams = ladderPairs(teamRatings)\n\n  return zip(teamRatings, adjacentTeams).map(([iTeamRating, iAdjacents]) => {\n    const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating\n    const [iOmega, iDelta] = iAdjacents.reduce(\n      ([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => {\n        const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ)\n        const piq = 1 / (1 + Math.exp((qMu - iMu) / ciq))\n        const sigSqToCiq = iSigmaSq / ciq\n        const iGamma = gamma(ciq, teamRatings.length, ...iTeamRating)\n\n        return [\n          omega + sigSqToCiq * (score(qRank, iRank) - piq),\n          delta + ((iGamma * sigSqToCiq) / ciq) * piq * (1 - piq),\n        ]\n      },\n      [0, 0]\n    )\n\n    return iTeam.map(({ mu, sigma }) => {\n      const sigmaSq = sigma * sigma\n      return {\n        mu: mu + (sigmaSq / iSigmaSq) * iOmega,\n        sigma: sigma * Math.sqrt(Math.max(1 - (sigmaSq / iSigmaSq) * iDelta, EPSILON)),\n      }\n    })\n  })\n}\n\nexport default model\n", "import gaussian from 'gaussian'\n\n// use a standard normal distribution - mean of zero, stddev/variance of one\nconst normal = gaussian(0, 1)\n\nexport const phiMajor = (x: number) => normal.cdf(x)\n\nexport const phiMajorInverse = (x: number) => normal.ppf(x)\n\nexport const phiMinor = (x: number) => normal.pdf(x)\n\nexport const v = (x: number, t: number) => {\n  const xt = x - t\n  const denom = phiMajor(xt)\n  return denom < Number.EPSILON ? -xt : phiMinor(xt) / denom\n}\n\nexport const w = (x: number, t: number) => {\n  const xt = x - t\n  const denom = phiMajor(xt)\n  if (denom < Number.EPSILON) {\n    return x < 0 ? 1 : 0\n  }\n  return v(x, t) * (v(x, t) + xt)\n}\n\nexport const vt = (x: number, t: number) => {\n  const xx = Math.abs(x)\n  const b = phiMajor(t - xx) - phiMajor(-t - xx)\n  if (b < 1e-5) {\n    if (x < 0) return -x - t\n    return -x + t\n  }\n  const a = phiMinor(-t - xx) - phiMinor(t - xx)\n  return (x < 0 ? -a : a) / b\n}\n\nexport const wt = (x: number, t: number) => {\n  const xx = Math.abs(x)\n  const b = phiMajor(t - xx) - phiMajor(-t - xx)\n  return b < Number.EPSILON\n    ? 1.0\n    : ((t - xx) * phiMinor(t - xx) + (t + xx) * phiMinor(-t - xx)) / b + vt(x, t) * vt(x, t)\n}\n", "import util from '../util'\nimport constants from '../constants'\nimport { w, v, vt, wt } from '../statistics'\nimport { Rating, Options, Model } from '../types'\n\nconst model: Model = (game: Rating[][], options: Options = {}) => {\n  const { TWOBETASQ, EPSILON } = constants(options)\n  const { teamRating, gamma } = util(options)\n  const teamRatings = teamRating(game)\n\n  return teamRatings.map((iTeamRating, i) => {\n    const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating\n    const [iOmega, iDelta] = teamRatings\n      .filter((_, q) => i !== q)\n      .reduce(\n        ([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => {\n          const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ)\n          const deltaMu = (iMu - qMu) / ciq\n          const sigSqToCiq = iSigmaSq / ciq\n          const iGamma = gamma(ciq, teamRatings.length, ...iTeamRating)\n\n          if (qRank === iRank) {\n            return [\n              omega + sigSqToCiq * vt(deltaMu, EPSILON / ciq),\n              delta + ((iGamma * sigSqToCiq) / ciq) * wt(deltaMu, EPSILON / ciq),\n            ]\n          }\n\n          const sign = qRank > iRank ? 1 : -1\n          return [\n            omega + sign * sigSqToCiq * v(sign * deltaMu, EPSILON / ciq),\n            delta + ((iGamma * sigSqToCiq) / ciq) * w(sign * deltaMu, EPSILON / ciq),\n          ]\n        },\n        [0, 0]\n      )\n\n    return iTeam.map(({ mu, sigma }) => {\n      const sigmaSq = sigma * sigma\n      return {\n        mu: mu + (sigmaSq / iSigmaSq) * iOmega,\n        sigma: sigma * Math.sqrt(Math.max(1 - (sigmaSq / iSigmaSq) * iDelta, EPSILON)),\n      }\n    })\n  })\n}\n\nexport default model\n", "import { zip } from 'ramda'\nimport util, { ladderPairs } from '../util'\nimport { w, v, vt, wt } from '../statistics'\nimport constants from '../constants'\nimport { Rating, Options, Model } from '../types'\n\nconst model: Model = (game: Rating[][], options: Options = {}) => {\n  const { TWOBETASQ, EPSILON } = constants(options)\n  const { teamRating, gamma } = util(options)\n  const teamRatings = teamRating(game)\n  const adjacentTeams = ladderPairs(teamRatings)\n\n  return zip(teamRatings, adjacentTeams).map(([iTeamRating, iAdjacents]) => {\n    const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating\n    const [iOmega, iDelta] = iAdjacents.reduce(\n      ([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => {\n        const ciq = 2 * Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ)\n        const deltaMu = (iMu - qMu) / ciq\n        const sigSqToCiq = iSigmaSq / ciq\n        const iGamma = gamma(ciq, teamRatings.length, ...iTeamRating)\n\n        if (qRank === iRank) {\n          return [\n            omega + sigSqToCiq * vt(deltaMu, EPSILON / ciq),\n            delta + ((iGamma * sigSqToCiq) / ciq) * wt(deltaMu, EPSILON / ciq),\n          ]\n        }\n\n        const sign = qRank > iRank ? 1 : -1\n        return [\n          omega + sign * sigSqToCiq * v(sign * deltaMu, EPSILON / ciq),\n          delta + ((iGamma * sigSqToCiq) / ciq) * w(sign * deltaMu, EPSILON / ciq),\n        ]\n      },\n      [0, 0]\n    )\n\n    return iTeam.map(({ mu, sigma }) => {\n      const sigmaSq = sigma * sigma\n      return {\n        mu: mu + (sigmaSq / iSigmaSq) * iOmega,\n        sigma: sigma * Math.sqrt(Math.max(1 - (sigmaSq / iSigmaSq) * iDelta, EPSILON)),\n      }\n    })\n  })\n}\n\nexport default model\n"],
  "mappings": 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  "names": ["utilC", "teamRating", "gamma", "model", "teamRating", "gamma", "zip", "model", "teamRating", "gamma", "zip", "model", "teamRating", "gamma", "zip", "model", "teamRating", "gamma", "zip"]
}
 |
@@ -1,3 +0,5 @@ | ||
import { Model } from '../types'; | ||
import { Model } from '../types.js'; | ||
declare const model: Model; | ||
export default model; | ||
export { model as default }; |
@@ -1,39 +0,95 @@ | ||
"use strict"; | ||
// src/util.ts | ||
import { zip } from "ramda"; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
// src/util.ts | ||
var sum = (a, b) => a + b; | ||
var rankings = (teams, rank = []) => { | ||
const teamScores = teams.map((_, i) => rank[i] || i); | ||
const outRank = new Array(teams.length); | ||
let s = 0; | ||
for (let j = 0; j < teamScores.length; j += 1) { | ||
if (j > 0 && teamScores[j - 1] < teamScores[j]) { | ||
s = j; | ||
} | ||
outRank[j] = s; | ||
} | ||
return outRank; | ||
}; | ||
var teamRating = (options) => (game) => { | ||
const rank = rankings(game, options.rank); | ||
return game.map((team, i) => [ | ||
// mu[i] | ||
team.map(({ mu }) => mu).reduce(sum, 0), | ||
// sigma^2[i] | ||
team.map(({ sigma }) => sigma * sigma).reduce(sum, 0), | ||
// (original team data) | ||
team, | ||
// rank[i] | ||
rank[i] | ||
]); | ||
}; | ||
var utilC = (options) => { | ||
const { BETASQ } = constants_default(options); | ||
return (teamRatings) => Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0)); | ||
}; | ||
var utilSumQ = (teamRatings, c) => teamRatings.map( | ||
([_qMu, _qSigmaSq, _qTeam, qRank]) => teamRatings.filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank).map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c)).reduce(sum, 0) | ||
); | ||
var utilA = (teamRatings) => teamRatings.map( | ||
([_iMu, _iSigmaSq, _iTeam, iRank]) => teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length | ||
); | ||
var gamma = (options) => { | ||
var _a; | ||
return (_a = options.gamma) != null ? _a : ( | ||
// default to iSigma / c | ||
(c, _k, _mu, sigmaSq, _team, _qRank) => Math.sqrt(sigmaSq) / c | ||
); | ||
}; | ||
var util_default = (options) => ({ | ||
utilC: utilC(options), | ||
teamRating: teamRating(options), | ||
gamma: gamma(options) | ||
}); | ||
exports.default = void 0; | ||
var _util = _interopRequireWildcard(require("../util")); | ||
var _constants = _interopRequireDefault(require("../constants")); | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); } | ||
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; } | ||
const model = (game, options = {}) => { | ||
const { | ||
EPSILON | ||
} = (0, _constants.default)(options); | ||
const { | ||
utilC, | ||
teamRating, | ||
gamma | ||
} = (0, _util.default)(options); | ||
const teamRatings = teamRating(game); | ||
const c = utilC(teamRatings); | ||
const sumQ = (0, _util.utilSumQ)(teamRatings, c); | ||
const a = (0, _util.utilA)(teamRatings); | ||
// src/models/plackett-luce.ts | ||
var model = (game, options = {}) => { | ||
const { EPSILON } = constants_default(options); | ||
const { utilC: utilC2, teamRating: teamRating2, gamma: gamma2 } = util_default(options); | ||
const teamRatings = teamRating2(game); | ||
const c = utilC2(teamRatings); | ||
const sumQ = utilSumQ(teamRatings, c); | ||
const a = utilA(teamRatings); | ||
return teamRatings.map((iTeamRating, i) => { | ||
const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating; | ||
const iMuOverCe = Math.exp(iMu / c); // tmp1 | ||
const [omegaSum, deltaSum] = teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => qRank <= iRank).reduce(([omega, delta], [_], q) => { | ||
const quotient = iMuOverCe / sumQ[q]; | ||
return [omega + (i === q ? 1 - quotient : -quotient) / a[q], delta + quotient * (1 - quotient) / a[q]]; | ||
}, [0, 0]); | ||
const iGamma = gamma(c, teamRatings.length, ...iTeamRating); | ||
const iMuOverCe = Math.exp(iMu / c); | ||
const [omegaSum, deltaSum] = teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => qRank <= iRank).reduce( | ||
([omega, delta], [_], q) => { | ||
const quotient = iMuOverCe / sumQ[q]; | ||
return [omega + (i === q ? 1 - quotient : -quotient) / a[q], delta + quotient * (1 - quotient) / a[q]]; | ||
}, | ||
[0, 0] | ||
); | ||
const iGamma = gamma2(c, teamRatings.length, ...iTeamRating); | ||
const iOmega = omegaSum * (iSigmaSq / c); | ||
const iDelta = iGamma * deltaSum * (iSigmaSq / c ** 2); | ||
return iTeam.map(({ | ||
mu, | ||
sigma | ||
}) => ({ | ||
return iTeam.map(({ mu, sigma }) => ({ | ||
mu: mu + sigma ** 2 / iSigmaSq * iOmega, | ||
@@ -44,3 +100,6 @@ sigma: sigma * Math.sqrt(Math.max(1 - sigma ** 2 / iSigmaSq * iDelta, EPSILON)) | ||
}; | ||
var _default = exports.default = model; | ||
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R0FBRyxFQUFFQyxRQUFRLEVBQUVDLEtBQUssRUFBRUMsS0FBSyxDQUFDLEdBQUdKLFdBQVc7SUFDakQsTUFBTUssU0FBUyxHQUFHQyxJQUFJLENBQUNDLEdBQUcsQ0FBQ04sR0FBRyxHQUFHTixDQUFDLENBQUMsRUFBQztJQUNwQyxNQUFNLENBQUNhLFFBQVEsRUFBRUMsUUFBUSxDQUFDLEdBQUdmLFdBQVcsQ0FDckNnQixNQUFNLENBQUMsQ0FBQyxDQUFDQyxJQUFJLEVBQUVDLFNBQVMsRUFBRUMsTUFBTSxFQUFFQyxLQUFLLENBQUMsS0FBS0EsS0FBSyxJQUFJVixLQUFLLENBQUMsQ0FDNURXLE1BQU0sQ0FDTCxDQUFDLENBQUNDLEtBQUssRUFBRUMsS0FBSyxDQUFDLEVBQUUsQ0FBQ0MsQ0FBQyxDQUFDLEVBQUVDLENBQUMsS0FBSztNQUMxQixNQUFNQyxRQUFRLEdBQUdmLFNBQVMsR0FBR1QsSUFBSSxDQUFDdUIsQ0FBQyxDQUFDO01BQ3BDLE9BQU8sQ0FBQ0gsS0FBSyxHQUFHLENBQUNqQyxDQUFDLEtBQUtvQyxDQUFDLEdBQUcsQ0FBQyxHQUFHQyxRQUFRLEdBQUcsQ0FBQ0EsUUFBUSxJQUFJNUMsQ0FBQyxDQUFDMkMsQ0FBQyxDQUFDLEVBQUVGLEtBQUssR0FBSUcsUUFBUSxJQUFJLENBQUMsR0FBR0EsUUFBUSxDQUFDLEdBQUk1QyxDQUFDLENBQUMyQyxDQUFDLENBQUMsQ0FBQztJQUMxRyxDQUFDLEVBQ0QsQ0FBQyxDQUFDLEVBQUUsQ0FBQyxDQUNQLENBQUM7SUFFSCxNQUFNRSxNQUFNLEdBQUc3QixLQUFLLENBQUNHLENBQUMsRUFBRUQsV0FBVyxDQUFDNEIsTUFBTSxFQUFFLEdBQUd0QixXQUFXLENBQUM7SUFDM0QsTUFBTXVCLE1BQU0sR0FBR2YsUUFBUSxJQUFJTixRQUFRLEdBQUdQLENBQUMsQ0FBQztJQUN4QyxNQUFNNkIsTUFBTSxHQUFHSCxNQUFNLEdBQUdaLFFBQVEsSUFBSVAsUUFBUSxHQUFHUCxDQUFDLElBQUksQ0FBQyxDQUFDO0lBRXRELE9BQU9RLEtBQUssQ0FBQ0osR0FBRyxDQUFDLENBQUM7TUFBRTBCLEVBQUU7TUFBRUM7SUFBTSxDQUFDLE1BQU07TUFDbkNELEVBQUUsRUFBRUEsRUFBRSxHQUFJQyxLQUFLLElBQUksQ0FBQyxHQUFHeEIsUUFBUSxHQUFJcUIsTUFBTTtNQUN6Q0csS0FBSyxFQUFFQSxLQUFLLEdBQUdwQixJQUFJLENBQUNxQixJQUFJLENBQUNyQixJQUFJLENBQUNzQixHQUFHLENBQUMsQ0FBQyxHQUFJRixLQUFLLElBQUksQ0FBQyxHQUFHeEIsUUFBUSxHQUFJc0IsTUFBTSxFQUFFcEMsT0FBTyxDQUFDO0lBQ2xGLENBQUMsQ0FBQyxDQUFDO0VBQ0wsQ0FBQyxDQUFDO0FBQ0osQ0FBQztBQUFBLElBQUF5QyxRQUFBLEdBQUFDLE9BQUEsQ0FBQS9ELE9BQUEsR0FFY2tCLEtBQUsiLCJpZ25vcmVMaXN0IjpbXX0= | ||
var plackett_luce_default = model; | ||
export { | ||
plackett_luce_default as default | ||
}; | ||
//# sourceMappingURL=data:application/json;base64,{
  "version": 3,
  "sources": ["../../src/util.ts", "../../src/constants.ts", "../../src/models/plackett-luce.ts"],
  "sourcesContent": ["import { zip } from 'ramda'\nimport constants from './constants'\nimport { Rating, Options, Gamma, Team, Rank } from './types'\n\nexport type TeamMu = number\n\nexport type TeamSigmaSq = number\n\nexport type TeamRating = [TeamMu, TeamSigmaSq, Team, Rank]\n\nexport const sum = (a: number, b: number) => a + b\n\nexport const score = (q: number, i: number) => {\n  if (q < i) {\n    return 0.0\n  }\n  if (q > i) {\n    return 1.0\n  }\n  // q === i\n  return 0.5\n}\n\nexport const rankings = (teams: Team[], rank: number[] = []) => {\n  const teamScores = teams.map((_, i) => rank[i] || i)\n  const outRank = new Array(teams.length)\n\n  let s = 0\n  for (let j = 0; j < teamScores.length; j += 1) {\n    if (j > 0 && teamScores[j - 1] < teamScores[j]) {\n      s = j\n    }\n    outRank[j] = s\n  }\n  return outRank\n}\n\n// this is basically shared code, precomputed for every model\nconst teamRating =\n  (options: Options) =>\n  (game: Team[]): TeamRating[] => {\n    const rank = rankings(game, options.rank)\n    return game.map((team, i) => [\n      // mu[i]\n      team.map(({ mu }) => mu).reduce(sum, 0),\n      // sigma^2[i]\n      team.map(({ sigma }) => sigma * sigma).reduce(sum, 0),\n      // (original team data)\n      team,\n      // rank[i]\n      rank[i],\n    ])\n  }\n\nexport const ladderPairs = <T>(ranks: T[]): T[][] => {\n  const size = ranks.length\n  const left = [undefined, ...ranks.slice(0, size - 1)]\n  const right = [...ranks.slice(1), undefined]\n  return zip(left, right).map(([l, r]) => {\n    if (l !== undefined && r !== undefined) return [l, r]\n    if (l !== undefined && r === undefined) return [l]\n    if (l === undefined && r !== undefined) return [r]\n    return [] // this should really only happen when size === 1\n  })\n}\n\nconst utilC = (options: Options) => {\n  const { BETASQ } = constants(options)\n  return (teamRatings: TeamRating[]) =>\n    Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0))\n}\n\nexport const utilSumQ = (teamRatings: TeamRating[], c: number) =>\n  teamRatings.map(([_qMu, _qSigmaSq, _qTeam, qRank]) =>\n    teamRatings\n      .filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank)\n      .map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c))\n      .reduce(sum, 0)\n  )\n\nexport const utilA = (teamRatings: TeamRating[]) =>\n  teamRatings.map(\n    ([_iMu, _iSigmaSq, _iTeam, iRank]) =>\n      teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length\n  )\n\nexport const gamma = (options: Options): Gamma =>\n  options.gamma ??\n  // default to iSigma / c\n  ((c: number, _k: number, _mu: number, sigmaSq: number, _team: Rating[], _qRank: number) => Math.sqrt(sigmaSq) / c)\n\nexport default (options: Options) => ({\n  utilC: utilC(options),\n  teamRating: teamRating(options),\n  gamma: gamma(options),\n})\n", "import { Options } from './types'\n\nconst builder = (options: Options) => {\n  // i'd love to know of a better way to do this\n  const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 0.0001 } = options\n  const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options\n  const betaSq = beta ** 2\n\n  return {\n    SIGMA: sigma,\n    MU: mu,\n    EPSILON: epsilon,\n    TWOBETASQ: 2 * betaSq,\n    BETA: beta,\n    BETASQ: betaSq,\n    Z: z,\n    TAU: tau,\n    LIMIT_SIGMA: limitSigma,\n  }\n}\n\nexport default builder\n", "import util, { utilSumQ, utilA } from '../util'\nimport constants from '../constants'\nimport { Rating, Options, Model } from '../types'\n\nconst model: Model = (game: Rating[][], options: Options = {}) => {\n  const { EPSILON } = constants(options)\n  const { utilC, teamRating, gamma } = util(options)\n  const teamRatings = teamRating(game)\n  const c = utilC(teamRatings)\n  const sumQ = utilSumQ(teamRatings, c)\n  const a = utilA(teamRatings)\n\n  return teamRatings.map((iTeamRating, i) => {\n    const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating\n    const iMuOverCe = Math.exp(iMu / c) // tmp1\n    const [omegaSum, deltaSum] = teamRatings\n      .filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => qRank <= iRank)\n      .reduce(\n        ([omega, delta], [_], q) => {\n          const quotient = iMuOverCe / sumQ[q]\n          return [omega + (i === q ? 1 - quotient : -quotient) / a[q], delta + (quotient * (1 - quotient)) / a[q]]\n        },\n        [0, 0]\n      )\n\n    const iGamma = gamma(c, teamRatings.length, ...iTeamRating)\n    const iOmega = omegaSum * (iSigmaSq / c)\n    const iDelta = iGamma * deltaSum * (iSigmaSq / c ** 2)\n\n    return iTeam.map(({ mu, sigma }) => ({\n      mu: mu + (sigma ** 2 / iSigmaSq) * iOmega,\n      sigma: sigma * Math.sqrt(Math.max(1 - (sigma ** 2 / iSigmaSq) * iDelta, EPSILON)),\n    }))\n  })\n}\n\nexport default model\n"],
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  "names": ["utilC", "teamRating", "gamma"]
}
 |
@@ -1,3 +0,5 @@ | ||
import { Model } from '../types'; | ||
import { Model } from '../types.js'; | ||
declare const model: Model; | ||
export default model; | ||
export { model as default }; |
@@ -1,38 +0,129 @@ | ||
"use strict"; | ||
// src/util.ts | ||
import { zip } from "ramda"; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
// src/util.ts | ||
var sum = (a, b) => a + b; | ||
var rankings = (teams, rank = []) => { | ||
const teamScores = teams.map((_, i) => rank[i] || i); | ||
const outRank = new Array(teams.length); | ||
let s = 0; | ||
for (let j = 0; j < teamScores.length; j += 1) { | ||
if (j > 0 && teamScores[j - 1] < teamScores[j]) { | ||
s = j; | ||
} | ||
outRank[j] = s; | ||
} | ||
return outRank; | ||
}; | ||
var teamRating = (options) => (game) => { | ||
const rank = rankings(game, options.rank); | ||
return game.map((team, i) => [ | ||
// mu[i] | ||
team.map(({ mu }) => mu).reduce(sum, 0), | ||
// sigma^2[i] | ||
team.map(({ sigma }) => sigma * sigma).reduce(sum, 0), | ||
// (original team data) | ||
team, | ||
// rank[i] | ||
rank[i] | ||
]); | ||
}; | ||
var utilC = (options) => { | ||
const { BETASQ } = constants_default(options); | ||
return (teamRatings) => Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0)); | ||
}; | ||
var gamma = (options) => { | ||
var _a; | ||
return (_a = options.gamma) != null ? _a : ( | ||
// default to iSigma / c | ||
(c, _k, _mu, sigmaSq, _team, _qRank) => Math.sqrt(sigmaSq) / c | ||
); | ||
}; | ||
var util_default = (options) => ({ | ||
utilC: utilC(options), | ||
teamRating: teamRating(options), | ||
gamma: gamma(options) | ||
}); | ||
exports.default = void 0; | ||
var _util = _interopRequireDefault(require("../util")); | ||
var _constants = _interopRequireDefault(require("../constants")); | ||
var _statistics = require("../statistics"); | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
const model = (game, options = {}) => { | ||
const { | ||
TWOBETASQ, | ||
EPSILON | ||
} = (0, _constants.default)(options); | ||
const { | ||
teamRating, | ||
gamma | ||
} = (0, _util.default)(options); | ||
const teamRatings = teamRating(game); | ||
// src/statistics.ts | ||
import gaussian from "gaussian"; | ||
var normal = gaussian(0, 1); | ||
var phiMajor = (x) => normal.cdf(x); | ||
var phiMinor = (x) => normal.pdf(x); | ||
var v = (x, t) => { | ||
const xt = x - t; | ||
const denom = phiMajor(xt); | ||
return denom < Number.EPSILON ? -xt : phiMinor(xt) / denom; | ||
}; | ||
var w = (x, t) => { | ||
const xt = x - t; | ||
const denom = phiMajor(xt); | ||
if (denom < Number.EPSILON) { | ||
return x < 0 ? 1 : 0; | ||
} | ||
return v(x, t) * (v(x, t) + xt); | ||
}; | ||
var vt = (x, t) => { | ||
const xx = Math.abs(x); | ||
const b = phiMajor(t - xx) - phiMajor(-t - xx); | ||
if (b < 1e-5) { | ||
if (x < 0) return -x - t; | ||
return -x + t; | ||
} | ||
const a = phiMinor(-t - xx) - phiMinor(t - xx); | ||
return (x < 0 ? -a : a) / b; | ||
}; | ||
var wt = (x, t) => { | ||
const xx = Math.abs(x); | ||
const b = phiMajor(t - xx) - phiMajor(-t - xx); | ||
return b < Number.EPSILON ? 1 : ((t - xx) * phiMinor(t - xx) + (t + xx) * phiMinor(-t - xx)) / b + vt(x, t) * vt(x, t); | ||
}; | ||
// src/models/thurstone-mosteller-full.ts | ||
var model = (game, options = {}) => { | ||
const { TWOBETASQ, EPSILON } = constants_default(options); | ||
const { teamRating: teamRating2, gamma: gamma2 } = util_default(options); | ||
const teamRatings = teamRating2(game); | ||
return teamRatings.map((iTeamRating, i) => { | ||
const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating; | ||
const [iOmega, iDelta] = teamRatings.filter((_, q) => i !== q).reduce(([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => { | ||
const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ); | ||
const deltaMu = (iMu - qMu) / ciq; | ||
const sigSqToCiq = iSigmaSq / ciq; | ||
const iGamma = gamma(ciq, teamRatings.length, ...iTeamRating); | ||
if (qRank === iRank) { | ||
return [omega + sigSqToCiq * (0, _statistics.vt)(deltaMu, EPSILON / ciq), delta + iGamma * sigSqToCiq / ciq * (0, _statistics.wt)(deltaMu, EPSILON / ciq)]; | ||
} | ||
const sign = qRank > iRank ? 1 : -1; | ||
return [omega + sign * sigSqToCiq * (0, _statistics.v)(sign * deltaMu, EPSILON / ciq), delta + iGamma * sigSqToCiq / ciq * (0, _statistics.w)(sign * deltaMu, EPSILON / ciq)]; | ||
}, [0, 0]); | ||
return iTeam.map(({ | ||
mu, | ||
sigma | ||
}) => { | ||
const [iOmega, iDelta] = teamRatings.filter((_, q) => i !== q).reduce( | ||
([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => { | ||
const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ); | ||
const deltaMu = (iMu - qMu) / ciq; | ||
const sigSqToCiq = iSigmaSq / ciq; | ||
const iGamma = gamma2(ciq, teamRatings.length, ...iTeamRating); | ||
if (qRank === iRank) { | ||
return [ | ||
omega + sigSqToCiq * vt(deltaMu, EPSILON / ciq), | ||
delta + iGamma * sigSqToCiq / ciq * wt(deltaMu, EPSILON / ciq) | ||
]; | ||
} | ||
const sign = qRank > iRank ? 1 : -1; | ||
return [ | ||
omega + sign * sigSqToCiq * v(sign * deltaMu, EPSILON / ciq), | ||
delta + iGamma * sigSqToCiq / ciq * w(sign * deltaMu, EPSILON / ciq) | ||
]; | ||
}, | ||
[0, 0] | ||
); | ||
return iTeam.map(({ mu, sigma }) => { | ||
const sigmaSq = sigma * sigma; | ||
@@ -46,3 +137,6 @@ return { | ||
}; | ||
var _default = exports.default = model; | ||
//# 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 | ||
var thurstone_mosteller_full_default = model; | ||
export { | ||
thurstone_mosteller_full_default as default | ||
}; | ||
//# sourceMappingURL=data:application/json;base64,{
  "version": 3,
  "sources": ["../../src/util.ts", "../../src/constants.ts", "../../src/statistics.ts", "../../src/models/thurstone-mosteller-full.ts"],
  "sourcesContent": ["import { zip } from 'ramda'\nimport constants from './constants'\nimport { Rating, Options, Gamma, Team, Rank } from './types'\n\nexport type TeamMu = number\n\nexport type TeamSigmaSq = number\n\nexport type TeamRating = [TeamMu, TeamSigmaSq, Team, Rank]\n\nexport const sum = (a: number, b: number) => a + b\n\nexport const score = (q: number, i: number) => {\n  if (q < i) {\n    return 0.0\n  }\n  if (q > i) {\n    return 1.0\n  }\n  // q === i\n  return 0.5\n}\n\nexport const rankings = (teams: Team[], rank: number[] = []) => {\n  const teamScores = teams.map((_, i) => rank[i] || i)\n  const outRank = new Array(teams.length)\n\n  let s = 0\n  for (let j = 0; j < teamScores.length; j += 1) {\n    if (j > 0 && teamScores[j - 1] < teamScores[j]) {\n      s = j\n    }\n    outRank[j] = s\n  }\n  return outRank\n}\n\n// this is basically shared code, precomputed for every model\nconst teamRating =\n  (options: Options) =>\n  (game: Team[]): TeamRating[] => {\n    const rank = rankings(game, options.rank)\n    return game.map((team, i) => [\n      // mu[i]\n      team.map(({ mu }) => mu).reduce(sum, 0),\n      // sigma^2[i]\n      team.map(({ sigma }) => sigma * sigma).reduce(sum, 0),\n      // (original team data)\n      team,\n      // rank[i]\n      rank[i],\n    ])\n  }\n\nexport const ladderPairs = <T>(ranks: T[]): T[][] => {\n  const size = ranks.length\n  const left = [undefined, ...ranks.slice(0, size - 1)]\n  const right = [...ranks.slice(1), undefined]\n  return zip(left, right).map(([l, r]) => {\n    if (l !== undefined && r !== undefined) return [l, r]\n    if (l !== undefined && r === undefined) return [l]\n    if (l === undefined && r !== undefined) return [r]\n    return [] // this should really only happen when size === 1\n  })\n}\n\nconst utilC = (options: Options) => {\n  const { BETASQ } = constants(options)\n  return (teamRatings: TeamRating[]) =>\n    Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0))\n}\n\nexport const utilSumQ = (teamRatings: TeamRating[], c: number) =>\n  teamRatings.map(([_qMu, _qSigmaSq, _qTeam, qRank]) =>\n    teamRatings\n      .filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank)\n      .map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c))\n      .reduce(sum, 0)\n  )\n\nexport const utilA = (teamRatings: TeamRating[]) =>\n  teamRatings.map(\n    ([_iMu, _iSigmaSq, _iTeam, iRank]) =>\n      teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length\n  )\n\nexport const gamma = (options: Options): Gamma =>\n  options.gamma ??\n  // default to iSigma / c\n  ((c: number, _k: number, _mu: number, sigmaSq: number, _team: Rating[], _qRank: number) => Math.sqrt(sigmaSq) / c)\n\nexport default (options: Options) => ({\n  utilC: utilC(options),\n  teamRating: teamRating(options),\n  gamma: gamma(options),\n})\n", "import { Options } from './types'\n\nconst builder = (options: Options) => {\n  // i'd love to know of a better way to do this\n  const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 0.0001 } = options\n  const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options\n  const betaSq = beta ** 2\n\n  return {\n    SIGMA: sigma,\n    MU: mu,\n    EPSILON: epsilon,\n    TWOBETASQ: 2 * betaSq,\n    BETA: beta,\n    BETASQ: betaSq,\n    Z: z,\n    TAU: tau,\n    LIMIT_SIGMA: limitSigma,\n  }\n}\n\nexport default builder\n", "import gaussian from 'gaussian'\n\n// use a standard normal distribution - mean of zero, stddev/variance of one\nconst normal = gaussian(0, 1)\n\nexport const phiMajor = (x: number) => normal.cdf(x)\n\nexport const phiMajorInverse = (x: number) => normal.ppf(x)\n\nexport const phiMinor = (x: number) => normal.pdf(x)\n\nexport const v = (x: number, t: number) => {\n  const xt = x - t\n  const denom = phiMajor(xt)\n  return denom < Number.EPSILON ? -xt : phiMinor(xt) / denom\n}\n\nexport const w = (x: number, t: number) => {\n  const xt = x - t\n  const denom = phiMajor(xt)\n  if (denom < Number.EPSILON) {\n    return x < 0 ? 1 : 0\n  }\n  return v(x, t) * (v(x, t) + xt)\n}\n\nexport const vt = (x: number, t: number) => {\n  const xx = Math.abs(x)\n  const b = phiMajor(t - xx) - phiMajor(-t - xx)\n  if (b < 1e-5) {\n    if (x < 0) return -x - t\n    return -x + t\n  }\n  const a = phiMinor(-t - xx) - phiMinor(t - xx)\n  return (x < 0 ? -a : a) / b\n}\n\nexport const wt = (x: number, t: number) => {\n  const xx = Math.abs(x)\n  const b = phiMajor(t - xx) - phiMajor(-t - xx)\n  return b < Number.EPSILON\n    ? 1.0\n    : ((t - xx) * phiMinor(t - xx) + (t + xx) * phiMinor(-t - xx)) / b + vt(x, t) * vt(x, t)\n}\n", "import util from '../util'\nimport constants from '../constants'\nimport { w, v, vt, wt } from '../statistics'\nimport { Rating, Options, Model } from '../types'\n\nconst model: Model = (game: Rating[][], options: Options = {}) => {\n  const { TWOBETASQ, EPSILON } = constants(options)\n  const { teamRating, gamma } = util(options)\n  const teamRatings = teamRating(game)\n\n  return teamRatings.map((iTeamRating, i) => {\n    const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating\n    const [iOmega, iDelta] = teamRatings\n      .filter((_, q) => i !== q)\n      .reduce(\n        ([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => {\n          const ciq = Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ)\n          const deltaMu = (iMu - qMu) / ciq\n          const sigSqToCiq = iSigmaSq / ciq\n          const iGamma = gamma(ciq, teamRatings.length, ...iTeamRating)\n\n          if (qRank === iRank) {\n            return [\n              omega + sigSqToCiq * vt(deltaMu, EPSILON / ciq),\n              delta + ((iGamma * sigSqToCiq) / ciq) * wt(deltaMu, EPSILON / ciq),\n            ]\n          }\n\n          const sign = qRank > iRank ? 1 : -1\n          return [\n            omega + sign * sigSqToCiq * v(sign * deltaMu, EPSILON / ciq),\n            delta + ((iGamma * sigSqToCiq) / ciq) * w(sign * deltaMu, EPSILON / ciq),\n          ]\n        },\n        [0, 0]\n      )\n\n    return iTeam.map(({ mu, sigma }) => {\n      const sigmaSq = sigma * sigma\n      return {\n        mu: mu + (sigmaSq / iSigmaSq) * iOmega,\n        sigma: sigma * Math.sqrt(Math.max(1 - (sigmaSq / iSigmaSq) * iDelta, EPSILON)),\n      }\n    })\n  })\n}\n\nexport default model\n"],
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  "names": ["teamRating", "gamma"]
}
 |
@@ -1,3 +0,5 @@ | ||
import { Model } from '../types'; | ||
import { Model } from '../types.js'; | ||
declare const model: Model; | ||
export default model; | ||
export { model as default }; |
@@ -1,42 +0,144 @@ | ||
"use strict"; | ||
// src/models/thurstone-mosteller-part.ts | ||
import { zip as zip2 } from "ramda"; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
// src/util.ts | ||
import { zip } from "ramda"; | ||
// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
// src/util.ts | ||
var sum = (a, b) => a + b; | ||
var rankings = (teams, rank = []) => { | ||
const teamScores = teams.map((_, i) => rank[i] || i); | ||
const outRank = new Array(teams.length); | ||
let s = 0; | ||
for (let j = 0; j < teamScores.length; j += 1) { | ||
if (j > 0 && teamScores[j - 1] < teamScores[j]) { | ||
s = j; | ||
} | ||
outRank[j] = s; | ||
} | ||
return outRank; | ||
}; | ||
var teamRating = (options) => (game) => { | ||
const rank = rankings(game, options.rank); | ||
return game.map((team, i) => [ | ||
// mu[i] | ||
team.map(({ mu }) => mu).reduce(sum, 0), | ||
// sigma^2[i] | ||
team.map(({ sigma }) => sigma * sigma).reduce(sum, 0), | ||
// (original team data) | ||
team, | ||
// rank[i] | ||
rank[i] | ||
]); | ||
}; | ||
var ladderPairs = (ranks) => { | ||
const size = ranks.length; | ||
const left = [void 0, ...ranks.slice(0, size - 1)]; | ||
const right = [...ranks.slice(1), void 0]; | ||
return zip(left, right).map(([l, r]) => { | ||
if (l !== void 0 && r !== void 0) return [l, r]; | ||
if (l !== void 0 && r === void 0) return [l]; | ||
if (l === void 0 && r !== void 0) return [r]; | ||
return []; | ||
}); | ||
}; | ||
var utilC = (options) => { | ||
const { BETASQ } = constants_default(options); | ||
return (teamRatings) => Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0)); | ||
}; | ||
var gamma = (options) => { | ||
var _a; | ||
return (_a = options.gamma) != null ? _a : ( | ||
// default to iSigma / c | ||
(c, _k, _mu, sigmaSq, _team, _qRank) => Math.sqrt(sigmaSq) / c | ||
); | ||
}; | ||
var util_default = (options) => ({ | ||
utilC: utilC(options), | ||
teamRating: teamRating(options), | ||
gamma: gamma(options) | ||
}); | ||
exports.default = void 0; | ||
var _ramda = require("ramda"); | ||
var _util = _interopRequireWildcard(require("../util")); | ||
var _statistics = require("../statistics"); | ||
var _constants = _interopRequireDefault(require("../constants")); | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); } | ||
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; } | ||
const model = (game, options = {}) => { | ||
const { | ||
TWOBETASQ, | ||
EPSILON | ||
} = (0, _constants.default)(options); | ||
const { | ||
teamRating, | ||
gamma | ||
} = (0, _util.default)(options); | ||
const teamRatings = teamRating(game); | ||
const adjacentTeams = (0, _util.ladderPairs)(teamRatings); | ||
return (0, _ramda.zip)(teamRatings, adjacentTeams).map(([iTeamRating, iAdjacents]) => { | ||
// src/statistics.ts | ||
import gaussian from "gaussian"; | ||
var normal = gaussian(0, 1); | ||
var phiMajor = (x) => normal.cdf(x); | ||
var phiMinor = (x) => normal.pdf(x); | ||
var v = (x, t) => { | ||
const xt = x - t; | ||
const denom = phiMajor(xt); | ||
return denom < Number.EPSILON ? -xt : phiMinor(xt) / denom; | ||
}; | ||
var w = (x, t) => { | ||
const xt = x - t; | ||
const denom = phiMajor(xt); | ||
if (denom < Number.EPSILON) { | ||
return x < 0 ? 1 : 0; | ||
} | ||
return v(x, t) * (v(x, t) + xt); | ||
}; | ||
var vt = (x, t) => { | ||
const xx = Math.abs(x); | ||
const b = phiMajor(t - xx) - phiMajor(-t - xx); | ||
if (b < 1e-5) { | ||
if (x < 0) return -x - t; | ||
return -x + t; | ||
} | ||
const a = phiMinor(-t - xx) - phiMinor(t - xx); | ||
return (x < 0 ? -a : a) / b; | ||
}; | ||
var wt = (x, t) => { | ||
const xx = Math.abs(x); | ||
const b = phiMajor(t - xx) - phiMajor(-t - xx); | ||
return b < Number.EPSILON ? 1 : ((t - xx) * phiMinor(t - xx) + (t + xx) * phiMinor(-t - xx)) / b + vt(x, t) * vt(x, t); | ||
}; | ||
// src/models/thurstone-mosteller-part.ts | ||
var model = (game, options = {}) => { | ||
const { TWOBETASQ, EPSILON } = constants_default(options); | ||
const { teamRating: teamRating2, gamma: gamma2 } = util_default(options); | ||
const teamRatings = teamRating2(game); | ||
const adjacentTeams = ladderPairs(teamRatings); | ||
return zip2(teamRatings, adjacentTeams).map(([iTeamRating, iAdjacents]) => { | ||
const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating; | ||
const [iOmega, iDelta] = iAdjacents.reduce(([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => { | ||
const ciq = 2 * Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ); | ||
const deltaMu = (iMu - qMu) / ciq; | ||
const sigSqToCiq = iSigmaSq / ciq; | ||
const iGamma = gamma(ciq, teamRatings.length, ...iTeamRating); | ||
if (qRank === iRank) { | ||
return [omega + sigSqToCiq * (0, _statistics.vt)(deltaMu, EPSILON / ciq), delta + iGamma * sigSqToCiq / ciq * (0, _statistics.wt)(deltaMu, EPSILON / ciq)]; | ||
} | ||
const sign = qRank > iRank ? 1 : -1; | ||
return [omega + sign * sigSqToCiq * (0, _statistics.v)(sign * deltaMu, EPSILON / ciq), delta + iGamma * sigSqToCiq / ciq * (0, _statistics.w)(sign * deltaMu, EPSILON / ciq)]; | ||
}, [0, 0]); | ||
return iTeam.map(({ | ||
mu, | ||
sigma | ||
}) => { | ||
const [iOmega, iDelta] = iAdjacents.reduce( | ||
([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => { | ||
const ciq = 2 * Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ); | ||
const deltaMu = (iMu - qMu) / ciq; | ||
const sigSqToCiq = iSigmaSq / ciq; | ||
const iGamma = gamma2(ciq, teamRatings.length, ...iTeamRating); | ||
if (qRank === iRank) { | ||
return [ | ||
omega + sigSqToCiq * vt(deltaMu, EPSILON / ciq), | ||
delta + iGamma * sigSqToCiq / ciq * wt(deltaMu, EPSILON / ciq) | ||
]; | ||
} | ||
const sign = qRank > iRank ? 1 : -1; | ||
return [ | ||
omega + sign * sigSqToCiq * v(sign * deltaMu, EPSILON / ciq), | ||
delta + iGamma * sigSqToCiq / ciq * w(sign * deltaMu, EPSILON / ciq) | ||
]; | ||
}, | ||
[0, 0] | ||
); | ||
return iTeam.map(({ mu, sigma }) => { | ||
const sigmaSq = sigma * sigma; | ||
@@ -50,3 +152,6 @@ return { | ||
}; | ||
var _default = exports.default = model; | ||
//# 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 | ||
var thurstone_mosteller_part_default = model; | ||
export { | ||
thurstone_mosteller_part_default as default | ||
}; | ||
//# sourceMappingURL=data:application/json;base64,{
  "version": 3,
  "sources": ["../../src/models/thurstone-mosteller-part.ts", "../../src/util.ts", "../../src/constants.ts", "../../src/statistics.ts"],
  "sourcesContent": ["import { zip } from 'ramda'\nimport util, { ladderPairs } from '../util'\nimport { w, v, vt, wt } from '../statistics'\nimport constants from '../constants'\nimport { Rating, Options, Model } from '../types'\n\nconst model: Model = (game: Rating[][], options: Options = {}) => {\n  const { TWOBETASQ, EPSILON } = constants(options)\n  const { teamRating, gamma } = util(options)\n  const teamRatings = teamRating(game)\n  const adjacentTeams = ladderPairs(teamRatings)\n\n  return zip(teamRatings, adjacentTeams).map(([iTeamRating, iAdjacents]) => {\n    const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating\n    const [iOmega, iDelta] = iAdjacents.reduce(\n      ([omega, delta], [qMu, qSigmaSq, _qTeam, qRank]) => {\n        const ciq = 2 * Math.sqrt(iSigmaSq + qSigmaSq + TWOBETASQ)\n        const deltaMu = (iMu - qMu) / ciq\n        const sigSqToCiq = iSigmaSq / ciq\n        const iGamma = gamma(ciq, teamRatings.length, ...iTeamRating)\n\n        if (qRank === iRank) {\n          return [\n            omega + sigSqToCiq * vt(deltaMu, EPSILON / ciq),\n            delta + ((iGamma * sigSqToCiq) / ciq) * wt(deltaMu, EPSILON / ciq),\n          ]\n        }\n\n        const sign = qRank > iRank ? 1 : -1\n        return [\n          omega + sign * sigSqToCiq * v(sign * deltaMu, EPSILON / ciq),\n          delta + ((iGamma * sigSqToCiq) / ciq) * w(sign * deltaMu, EPSILON / ciq),\n        ]\n      },\n      [0, 0]\n    )\n\n    return iTeam.map(({ mu, sigma }) => {\n      const sigmaSq = sigma * sigma\n      return {\n        mu: mu + (sigmaSq / iSigmaSq) * iOmega,\n        sigma: sigma * Math.sqrt(Math.max(1 - (sigmaSq / iSigmaSq) * iDelta, EPSILON)),\n      }\n    })\n  })\n}\n\nexport default model\n", "import { zip } from 'ramda'\nimport constants from './constants'\nimport { Rating, Options, Gamma, Team, Rank } from './types'\n\nexport type TeamMu = number\n\nexport type TeamSigmaSq = number\n\nexport type TeamRating = [TeamMu, TeamSigmaSq, Team, Rank]\n\nexport const sum = (a: number, b: number) => a + b\n\nexport const score = (q: number, i: number) => {\n  if (q < i) {\n    return 0.0\n  }\n  if (q > i) {\n    return 1.0\n  }\n  // q === i\n  return 0.5\n}\n\nexport const rankings = (teams: Team[], rank: number[] = []) => {\n  const teamScores = teams.map((_, i) => rank[i] || i)\n  const outRank = new Array(teams.length)\n\n  let s = 0\n  for (let j = 0; j < teamScores.length; j += 1) {\n    if (j > 0 && teamScores[j - 1] < teamScores[j]) {\n      s = j\n    }\n    outRank[j] = s\n  }\n  return outRank\n}\n\n// this is basically shared code, precomputed for every model\nconst teamRating =\n  (options: Options) =>\n  (game: Team[]): TeamRating[] => {\n    const rank = rankings(game, options.rank)\n    return game.map((team, i) => [\n      // mu[i]\n      team.map(({ mu }) => mu).reduce(sum, 0),\n      // sigma^2[i]\n      team.map(({ sigma }) => sigma * sigma).reduce(sum, 0),\n      // (original team data)\n      team,\n      // rank[i]\n      rank[i],\n    ])\n  }\n\nexport const ladderPairs = <T>(ranks: T[]): T[][] => {\n  const size = ranks.length\n  const left = [undefined, ...ranks.slice(0, size - 1)]\n  const right = [...ranks.slice(1), undefined]\n  return zip(left, right).map(([l, r]) => {\n    if (l !== undefined && r !== undefined) return [l, r]\n    if (l !== undefined && r === undefined) return [l]\n    if (l === undefined && r !== undefined) return [r]\n    return [] // this should really only happen when size === 1\n  })\n}\n\nconst utilC = (options: Options) => {\n  const { BETASQ } = constants(options)\n  return (teamRatings: TeamRating[]) =>\n    Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0))\n}\n\nexport const utilSumQ = (teamRatings: TeamRating[], c: number) =>\n  teamRatings.map(([_qMu, _qSigmaSq, _qTeam, qRank]) =>\n    teamRatings\n      .filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank)\n      .map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c))\n      .reduce(sum, 0)\n  )\n\nexport const utilA = (teamRatings: TeamRating[]) =>\n  teamRatings.map(\n    ([_iMu, _iSigmaSq, _iTeam, iRank]) =>\n      teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length\n  )\n\nexport const gamma = (options: Options): Gamma =>\n  options.gamma ??\n  // default to iSigma / c\n  ((c: number, _k: number, _mu: number, sigmaSq: number, _team: Rating[], _qRank: number) => Math.sqrt(sigmaSq) / c)\n\nexport default (options: Options) => ({\n  utilC: utilC(options),\n  teamRating: teamRating(options),\n  gamma: gamma(options),\n})\n", "import { Options } from './types'\n\nconst builder = (options: Options) => {\n  // i'd love to know of a better way to do this\n  const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 0.0001 } = options\n  const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options\n  const betaSq = beta ** 2\n\n  return {\n    SIGMA: sigma,\n    MU: mu,\n    EPSILON: epsilon,\n    TWOBETASQ: 2 * betaSq,\n    BETA: beta,\n    BETASQ: betaSq,\n    Z: z,\n    TAU: tau,\n    LIMIT_SIGMA: limitSigma,\n  }\n}\n\nexport default builder\n", "import gaussian from 'gaussian'\n\n// use a standard normal distribution - mean of zero, stddev/variance of one\nconst normal = gaussian(0, 1)\n\nexport const phiMajor = (x: number) => normal.cdf(x)\n\nexport const phiMajorInverse = (x: number) => normal.ppf(x)\n\nexport const phiMinor = (x: number) => normal.pdf(x)\n\nexport const v = (x: number, t: number) => {\n  const xt = x - t\n  const denom = phiMajor(xt)\n  return denom < Number.EPSILON ? -xt : phiMinor(xt) / denom\n}\n\nexport const w = (x: number, t: number) => {\n  const xt = x - t\n  const denom = phiMajor(xt)\n  if (denom < Number.EPSILON) {\n    return x < 0 ? 1 : 0\n  }\n  return v(x, t) * (v(x, t) + xt)\n}\n\nexport const vt = (x: number, t: number) => {\n  const xx = Math.abs(x)\n  const b = phiMajor(t - xx) - phiMajor(-t - xx)\n  if (b < 1e-5) {\n    if (x < 0) return -x - t\n    return -x + t\n  }\n  const a = phiMinor(-t - xx) - phiMinor(t - xx)\n  return (x < 0 ? -a : a) / b\n}\n\nexport const wt = (x: number, t: number) => {\n  const xx = Math.abs(x)\n  const b = phiMajor(t - xx) - phiMajor(-t - xx)\n  return b < Number.EPSILON\n    ? 1.0\n    : ((t - xx) * phiMinor(t - xx) + (t + xx) * phiMinor(-t - xx)) / b + vt(x, t) * vt(x, t)\n}\n"],
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  "names": ["zip", "teamRating", "gamma", "zip"]
}
 |
@@ -1,3 +0,5 @@ | ||
import { Rating, Options } from './types'; | ||
import { Rating, Options } from './types.js'; | ||
declare const ordinal: (rating: Rating, options?: Options) => number; | ||
export default ordinal; | ||
export { ordinal as default }; |
@@ -1,20 +0,30 @@ | ||
"use strict"; | ||
// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
}); | ||
exports.default = void 0; | ||
var _constants = _interopRequireDefault(require("./constants")); | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
const ordinal = (rating, options = {}) => { | ||
const { | ||
sigma, | ||
mu | ||
} = rating; | ||
const { | ||
Z | ||
} = (0, _constants.default)(options); | ||
// src/ordinal.ts | ||
var ordinal = (rating, options = {}) => { | ||
const { sigma, mu } = rating; | ||
const { Z } = constants_default(options); | ||
return mu - Z * sigma; | ||
}; | ||
var _default = exports.default = ordinal; | ||
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var ordinal_default = ordinal; | ||
export { | ||
ordinal_default as default | ||
}; | ||
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@@ -1,3 +0,5 @@ | ||
import { Options, Team } from './types'; | ||
import { Team, Options } from './types.js'; | ||
declare const predictWin: (teams: Team[], options?: Options) => number | undefined; | ||
export default predictWin; | ||
export { predictWin as default }; |
@@ -1,34 +0,97 @@ | ||
"use strict"; | ||
// src/predict-draw.ts | ||
import { flatten } from "ramda"; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
// src/util.ts | ||
import { zip } from "ramda"; | ||
var sum = (a, b) => a + b; | ||
var rankings = (teams, rank = []) => { | ||
const teamScores = teams.map((_, i) => rank[i] || i); | ||
const outRank = new Array(teams.length); | ||
let s = 0; | ||
for (let j = 0; j < teamScores.length; j += 1) { | ||
if (j > 0 && teamScores[j - 1] < teamScores[j]) { | ||
s = j; | ||
} | ||
outRank[j] = s; | ||
} | ||
return outRank; | ||
}; | ||
var teamRating = (options) => (game) => { | ||
const rank = rankings(game, options.rank); | ||
return game.map((team, i) => [ | ||
// mu[i] | ||
team.map(({ mu }) => mu).reduce(sum, 0), | ||
// sigma^2[i] | ||
team.map(({ sigma }) => sigma * sigma).reduce(sum, 0), | ||
// (original team data) | ||
team, | ||
// rank[i] | ||
rank[i] | ||
]); | ||
}; | ||
var utilC = (options) => { | ||
const { BETASQ } = constants_default(options); | ||
return (teamRatings) => Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0)); | ||
}; | ||
var gamma = (options) => { | ||
var _a; | ||
return (_a = options.gamma) != null ? _a : ( | ||
// default to iSigma / c | ||
(c, _k, _mu, sigmaSq, _team, _qRank) => Math.sqrt(sigmaSq) / c | ||
); | ||
}; | ||
var util_default = (options) => ({ | ||
utilC: utilC(options), | ||
teamRating: teamRating(options), | ||
gamma: gamma(options) | ||
}); | ||
exports.default = void 0; | ||
var _ramda = require("ramda"); | ||
var _constants = _interopRequireDefault(require("./constants")); | ||
var _util = _interopRequireWildcard(require("./util")); | ||
var _statistics = require("./statistics"); | ||
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); } | ||
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; } | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
const predictWin = (teams, options = {}) => { | ||
const { | ||
teamRating | ||
} = (0, _util.default)(options); | ||
const { | ||
BETASQ, | ||
BETA | ||
} = (0, _constants.default)(options); | ||
// src/statistics.ts | ||
import gaussian from "gaussian"; | ||
var normal = gaussian(0, 1); | ||
var phiMajor = (x) => normal.cdf(x); | ||
var phiMajorInverse = (x) => normal.ppf(x); | ||
// src/predict-draw.ts | ||
var predictWin = (teams, options = {}) => { | ||
const { teamRating: teamRating2 } = util_default(options); | ||
const { BETASQ, BETA } = constants_default(options); | ||
const n = teams.length; | ||
if (n === 0) return undefined; | ||
if (n === 0) return void 0; | ||
if (n === 1) return 1; | ||
const denom = n * (n - 1) / (n > 2 ? 1 : 2); | ||
const teamRatings = teamRating(teams); | ||
const drawMargin = Math.sqrt((0, _ramda.flatten)(teams).length) * BETA * (0, _statistics.phiMajorInverse)((1 + 1 / n) / 2); | ||
return Math.abs(teamRatings.map(([muA, sigmaSqA], i) => teamRatings.filter((_, q) => i !== q).map(([muB, sigmaSqB]) => { | ||
const sigmaBar = Math.sqrt(n * BETASQ + sigmaSqA + sigmaSqB); | ||
return (0, _statistics.phiMajor)((drawMargin - muA + muB) / sigmaBar) - (0, _statistics.phiMajor)((muA - muB - drawMargin) / sigmaBar); | ||
})).flat().reduce(_util.sum, 0)) / denom; | ||
const teamRatings = teamRating2(teams); | ||
const drawMargin = Math.sqrt(flatten(teams).length) * BETA * phiMajorInverse((1 + 1 / n) / 2); | ||
return Math.abs( | ||
teamRatings.map( | ||
([muA, sigmaSqA], i) => teamRatings.filter((_, q) => i !== q).map(([muB, sigmaSqB]) => { | ||
const sigmaBar = Math.sqrt(n * BETASQ + sigmaSqA + sigmaSqB); | ||
return phiMajor((drawMargin - muA + muB) / sigmaBar) - phiMajor((muA - muB - drawMargin) / sigmaBar); | ||
}) | ||
).flat().reduce(sum, 0) | ||
) / denom; | ||
}; | ||
var _default = exports.default = predictWin; | ||
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 | ||
var predict_draw_default = predictWin; | ||
export { | ||
predict_draw_default as default | ||
}; | ||
//# sourceMappingURL=data:application/json;base64,{
  "version": 3,
  "sources": ["../src/predict-draw.ts", "../src/constants.ts", "../src/util.ts", "../src/statistics.ts"],
  "sourcesContent": ["import { flatten } from 'ramda'\nimport constants from './constants'\nimport util, { sum } from './util'\nimport { phiMajor, phiMajorInverse } from './statistics'\nimport { Options, Team } from './types'\n\nconst predictWin = (teams: Team[], options: Options = {}) => {\n  const { teamRating } = util(options)\n  const { BETASQ, BETA } = constants(options)\n\n  const n = teams.length\n  if (n === 0) return undefined\n  if (n === 1) return 1\n\n  const denom = (n * (n - 1)) / (n > 2 ? 1 : 2)\n  const teamRatings = teamRating(teams)\n  const drawMargin = Math.sqrt(flatten(teams).length) * BETA * phiMajorInverse((1 + 1 / n) / 2)\n\n  return (\n    Math.abs(\n      teamRatings\n        .map(([muA, sigmaSqA], i) =>\n          teamRatings\n            .filter((_, q) => i !== q)\n            .map(([muB, sigmaSqB]) => {\n              const sigmaBar = Math.sqrt(n * BETASQ + sigmaSqA + sigmaSqB)\n              return phiMajor((drawMargin - muA + muB) / sigmaBar) - phiMajor((muA - muB - drawMargin) / sigmaBar)\n            })\n        )\n        .flat()\n        .reduce(sum, 0)\n    ) / denom\n  )\n}\n\nexport default predictWin\n", "import { Options } from './types'\n\nconst builder = (options: Options) => {\n  // i'd love to know of a better way to do this\n  const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 0.0001 } = options\n  const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options\n  const betaSq = beta ** 2\n\n  return {\n    SIGMA: sigma,\n    MU: mu,\n    EPSILON: epsilon,\n    TWOBETASQ: 2 * betaSq,\n    BETA: beta,\n    BETASQ: betaSq,\n    Z: z,\n    TAU: tau,\n    LIMIT_SIGMA: limitSigma,\n  }\n}\n\nexport default builder\n", "import { zip } from 'ramda'\nimport constants from './constants'\nimport { Rating, Options, Gamma, Team, Rank } from './types'\n\nexport type TeamMu = number\n\nexport type TeamSigmaSq = number\n\nexport type TeamRating = [TeamMu, TeamSigmaSq, Team, Rank]\n\nexport const sum = (a: number, b: number) => a + b\n\nexport const score = (q: number, i: number) => {\n  if (q < i) {\n    return 0.0\n  }\n  if (q > i) {\n    return 1.0\n  }\n  // q === i\n  return 0.5\n}\n\nexport const rankings = (teams: Team[], rank: number[] = []) => {\n  const teamScores = teams.map((_, i) => rank[i] || i)\n  const outRank = new Array(teams.length)\n\n  let s = 0\n  for (let j = 0; j < teamScores.length; j += 1) {\n    if (j > 0 && teamScores[j - 1] < teamScores[j]) {\n      s = j\n    }\n    outRank[j] = s\n  }\n  return outRank\n}\n\n// this is basically shared code, precomputed for every model\nconst teamRating =\n  (options: Options) =>\n  (game: Team[]): TeamRating[] => {\n    const rank = rankings(game, options.rank)\n    return game.map((team, i) => [\n      // mu[i]\n      team.map(({ mu }) => mu).reduce(sum, 0),\n      // sigma^2[i]\n      team.map(({ sigma }) => sigma * sigma).reduce(sum, 0),\n      // (original team data)\n      team,\n      // rank[i]\n      rank[i],\n    ])\n  }\n\nexport const ladderPairs = <T>(ranks: T[]): T[][] => {\n  const size = ranks.length\n  const left = [undefined, ...ranks.slice(0, size - 1)]\n  const right = [...ranks.slice(1), undefined]\n  return zip(left, right).map(([l, r]) => {\n    if (l !== undefined && r !== undefined) return [l, r]\n    if (l !== undefined && r === undefined) return [l]\n    if (l === undefined && r !== undefined) return [r]\n    return [] // this should really only happen when size === 1\n  })\n}\n\nconst utilC = (options: Options) => {\n  const { BETASQ } = constants(options)\n  return (teamRatings: TeamRating[]) =>\n    Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0))\n}\n\nexport const utilSumQ = (teamRatings: TeamRating[], c: number) =>\n  teamRatings.map(([_qMu, _qSigmaSq, _qTeam, qRank]) =>\n    teamRatings\n      .filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank)\n      .map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c))\n      .reduce(sum, 0)\n  )\n\nexport const utilA = (teamRatings: TeamRating[]) =>\n  teamRatings.map(\n    ([_iMu, _iSigmaSq, _iTeam, iRank]) =>\n      teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length\n  )\n\nexport const gamma = (options: Options): Gamma =>\n  options.gamma ??\n  // default to iSigma / c\n  ((c: number, _k: number, _mu: number, sigmaSq: number, _team: Rating[], _qRank: number) => Math.sqrt(sigmaSq) / c)\n\nexport default (options: Options) => ({\n  utilC: utilC(options),\n  teamRating: teamRating(options),\n  gamma: gamma(options),\n})\n", "import gaussian from 'gaussian'\n\n// use a standard normal distribution - mean of zero, stddev/variance of one\nconst normal = gaussian(0, 1)\n\nexport const phiMajor = (x: number) => normal.cdf(x)\n\nexport const phiMajorInverse = (x: number) => normal.ppf(x)\n\nexport const phiMinor = (x: number) => normal.pdf(x)\n\nexport const v = (x: number, t: number) => {\n  const xt = x - t\n  const denom = phiMajor(xt)\n  return denom < Number.EPSILON ? -xt : phiMinor(xt) / denom\n}\n\nexport const w = (x: number, t: number) => {\n  const xt = x - t\n  const denom = phiMajor(xt)\n  if (denom < Number.EPSILON) {\n    return x < 0 ? 1 : 0\n  }\n  return v(x, t) * (v(x, t) + xt)\n}\n\nexport const vt = (x: number, t: number) => {\n  const xx = Math.abs(x)\n  const b = phiMajor(t - xx) - phiMajor(-t - xx)\n  if (b < 1e-5) {\n    if (x < 0) return -x - t\n    return -x + t\n  }\n  const a = phiMinor(-t - xx) - phiMinor(t - xx)\n  return (x < 0 ? -a : a) / b\n}\n\nexport const wt = (x: number, t: number) => {\n  const xx = Math.abs(x)\n  const b = phiMajor(t - xx) - phiMajor(-t - xx)\n  return b < Number.EPSILON\n    ? 1.0\n    : ((t - xx) * phiMinor(t - xx) + (t + xx) * phiMinor(-t - xx)) / b + vt(x, t) * vt(x, t)\n}\n"],
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  "names": ["teamRating"]
}
 |
@@ -1,3 +0,5 @@ | ||
import { Options, Team } from './types'; | ||
import { Team, Options } from './types.js'; | ||
declare const predictWin: (teams: Team[], options?: Options) => number[]; | ||
export default predictWin; | ||
export { predictWin as default }; |
@@ -1,26 +0,85 @@ | ||
"use strict"; | ||
// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
// src/util.ts | ||
import { zip } from "ramda"; | ||
var sum = (a, b) => a + b; | ||
var rankings = (teams, rank = []) => { | ||
const teamScores = teams.map((_, i) => rank[i] || i); | ||
const outRank = new Array(teams.length); | ||
let s = 0; | ||
for (let j = 0; j < teamScores.length; j += 1) { | ||
if (j > 0 && teamScores[j - 1] < teamScores[j]) { | ||
s = j; | ||
} | ||
outRank[j] = s; | ||
} | ||
return outRank; | ||
}; | ||
var teamRating = (options) => (game) => { | ||
const rank = rankings(game, options.rank); | ||
return game.map((team, i) => [ | ||
// mu[i] | ||
team.map(({ mu }) => mu).reduce(sum, 0), | ||
// sigma^2[i] | ||
team.map(({ sigma }) => sigma * sigma).reduce(sum, 0), | ||
// (original team data) | ||
team, | ||
// rank[i] | ||
rank[i] | ||
]); | ||
}; | ||
var utilC = (options) => { | ||
const { BETASQ } = constants_default(options); | ||
return (teamRatings) => Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0)); | ||
}; | ||
var gamma = (options) => { | ||
var _a; | ||
return (_a = options.gamma) != null ? _a : ( | ||
// default to iSigma / c | ||
(c, _k, _mu, sigmaSq, _team, _qRank) => Math.sqrt(sigmaSq) / c | ||
); | ||
}; | ||
var util_default = (options) => ({ | ||
utilC: utilC(options), | ||
teamRating: teamRating(options), | ||
gamma: gamma(options) | ||
}); | ||
exports.default = void 0; | ||
var _constants = _interopRequireDefault(require("./constants")); | ||
var _util = _interopRequireWildcard(require("./util")); | ||
var _statistics = require("./statistics"); | ||
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); } | ||
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; } | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
const predictWin = (teams, options = {}) => { | ||
const { | ||
teamRating | ||
} = (0, _util.default)(options); | ||
const { | ||
BETASQ | ||
} = (0, _constants.default)(options); | ||
const teamRatings = teamRating(teams); | ||
// src/statistics.ts | ||
import gaussian from "gaussian"; | ||
var normal = gaussian(0, 1); | ||
var phiMajor = (x) => normal.cdf(x); | ||
// src/predict-win.ts | ||
var predictWin = (teams, options = {}) => { | ||
const { teamRating: teamRating2 } = util_default(options); | ||
const { BETASQ } = constants_default(options); | ||
const teamRatings = teamRating2(teams); | ||
const n = teams.length; | ||
const denom = n * (n - 1) / 2; | ||
return teamRatings.map(([muA, sigmaSqA], i) => teamRatings.filter((_, q) => i !== q).map(([muB, sigmaSqB]) => (0, _statistics.phiMajor)((muA - muB) / Math.sqrt(n * BETASQ + sigmaSqA + sigmaSqB))).reduce(_util.sum, 0) / denom); | ||
return teamRatings.map( | ||
([muA, sigmaSqA], i) => teamRatings.filter((_, q) => i !== q).map(([muB, sigmaSqB]) => phiMajor((muA - muB) / Math.sqrt(n * BETASQ + sigmaSqA + sigmaSqB))).reduce(sum, 0) / denom | ||
); | ||
}; | ||
var _default = exports.default = predictWin; | ||
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var predict_win_default = predictWin; | ||
export { | ||
predict_win_default as default | ||
}; | ||
//# sourceMappingURL=data:application/json;base64,{
  "version": 3,
  "sources": ["../src/constants.ts", "../src/util.ts", "../src/statistics.ts", "../src/predict-win.ts"],
  "sourcesContent": ["import { Options } from './types'\n\nconst builder = (options: Options) => {\n  // i'd love to know of a better way to do this\n  const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 0.0001 } = options\n  const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options\n  const betaSq = beta ** 2\n\n  return {\n    SIGMA: sigma,\n    MU: mu,\n    EPSILON: epsilon,\n    TWOBETASQ: 2 * betaSq,\n    BETA: beta,\n    BETASQ: betaSq,\n    Z: z,\n    TAU: tau,\n    LIMIT_SIGMA: limitSigma,\n  }\n}\n\nexport default builder\n", "import { zip } from 'ramda'\nimport constants from './constants'\nimport { Rating, Options, Gamma, Team, Rank } from './types'\n\nexport type TeamMu = number\n\nexport type TeamSigmaSq = number\n\nexport type TeamRating = [TeamMu, TeamSigmaSq, Team, Rank]\n\nexport const sum = (a: number, b: number) => a + b\n\nexport const score = (q: number, i: number) => {\n  if (q < i) {\n    return 0.0\n  }\n  if (q > i) {\n    return 1.0\n  }\n  // q === i\n  return 0.5\n}\n\nexport const rankings = (teams: Team[], rank: number[] = []) => {\n  const teamScores = teams.map((_, i) => rank[i] || i)\n  const outRank = new Array(teams.length)\n\n  let s = 0\n  for (let j = 0; j < teamScores.length; j += 1) {\n    if (j > 0 && teamScores[j - 1] < teamScores[j]) {\n      s = j\n    }\n    outRank[j] = s\n  }\n  return outRank\n}\n\n// this is basically shared code, precomputed for every model\nconst teamRating =\n  (options: Options) =>\n  (game: Team[]): TeamRating[] => {\n    const rank = rankings(game, options.rank)\n    return game.map((team, i) => [\n      // mu[i]\n      team.map(({ mu }) => mu).reduce(sum, 0),\n      // sigma^2[i]\n      team.map(({ sigma }) => sigma * sigma).reduce(sum, 0),\n      // (original team data)\n      team,\n      // rank[i]\n      rank[i],\n    ])\n  }\n\nexport const ladderPairs = <T>(ranks: T[]): T[][] => {\n  const size = ranks.length\n  const left = [undefined, ...ranks.slice(0, size - 1)]\n  const right = [...ranks.slice(1), undefined]\n  return zip(left, right).map(([l, r]) => {\n    if (l !== undefined && r !== undefined) return [l, r]\n    if (l !== undefined && r === undefined) return [l]\n    if (l === undefined && r !== undefined) return [r]\n    return [] // this should really only happen when size === 1\n  })\n}\n\nconst utilC = (options: Options) => {\n  const { BETASQ } = constants(options)\n  return (teamRatings: TeamRating[]) =>\n    Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0))\n}\n\nexport const utilSumQ = (teamRatings: TeamRating[], c: number) =>\n  teamRatings.map(([_qMu, _qSigmaSq, _qTeam, qRank]) =>\n    teamRatings\n      .filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank)\n      .map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c))\n      .reduce(sum, 0)\n  )\n\nexport const utilA = (teamRatings: TeamRating[]) =>\n  teamRatings.map(\n    ([_iMu, _iSigmaSq, _iTeam, iRank]) =>\n      teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length\n  )\n\nexport const gamma = (options: Options): Gamma =>\n  options.gamma ??\n  // default to iSigma / c\n  ((c: number, _k: number, _mu: number, sigmaSq: number, _team: Rating[], _qRank: number) => Math.sqrt(sigmaSq) / c)\n\nexport default (options: Options) => ({\n  utilC: utilC(options),\n  teamRating: teamRating(options),\n  gamma: gamma(options),\n})\n", "import gaussian from 'gaussian'\n\n// use a standard normal distribution - mean of zero, stddev/variance of one\nconst normal = gaussian(0, 1)\n\nexport const phiMajor = (x: number) => normal.cdf(x)\n\nexport const phiMajorInverse = (x: number) => normal.ppf(x)\n\nexport const phiMinor = (x: number) => normal.pdf(x)\n\nexport const v = (x: number, t: number) => {\n  const xt = x - t\n  const denom = phiMajor(xt)\n  return denom < Number.EPSILON ? -xt : phiMinor(xt) / denom\n}\n\nexport const w = (x: number, t: number) => {\n  const xt = x - t\n  const denom = phiMajor(xt)\n  if (denom < Number.EPSILON) {\n    return x < 0 ? 1 : 0\n  }\n  return v(x, t) * (v(x, t) + xt)\n}\n\nexport const vt = (x: number, t: number) => {\n  const xx = Math.abs(x)\n  const b = phiMajor(t - xx) - phiMajor(-t - xx)\n  if (b < 1e-5) {\n    if (x < 0) return -x - t\n    return -x + t\n  }\n  const a = phiMinor(-t - xx) - phiMinor(t - xx)\n  return (x < 0 ? -a : a) / b\n}\n\nexport const wt = (x: number, t: number) => {\n  const xx = Math.abs(x)\n  const b = phiMajor(t - xx) - phiMajor(-t - xx)\n  return b < Number.EPSILON\n    ? 1.0\n    : ((t - xx) * phiMinor(t - xx) + (t + xx) * phiMinor(-t - xx)) / b + vt(x, t) * vt(x, t)\n}\n", "import constants from './constants'\nimport util, { sum } from './util'\nimport { phiMajor } from './statistics'\nimport { Options, Team } from './types'\n\nconst predictWin = (teams: Team[], options: Options = {}) => {\n  const { teamRating } = util(options)\n  const { BETASQ } = constants(options)\n\n  const teamRatings = teamRating(teams)\n  const n = teams.length\n  const denom = (n * (n - 1)) / 2\n\n  return teamRatings.map(\n    ([muA, sigmaSqA], i) =>\n      teamRatings\n        .filter((_, q) => i !== q)\n        .map(([muB, sigmaSqB]) => phiMajor((muA - muB) / Math.sqrt(n * BETASQ + sigmaSqA + sigmaSqB)))\n        .reduce(sum, 0) / denom\n  )\n}\n\nexport default predictWin\n"],
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  "names": ["teamRating"]
}
 |
@@ -1,3 +0,5 @@ | ||
import { Options, Team } from './types'; | ||
import { Team, Options } from './types.js'; | ||
declare const rate: (teams: Team[], options?: Options) => Team[]; | ||
export default rate; | ||
export { rate as default }; |
189
dist/rate.js
@@ -1,52 +0,157 @@ | ||
"use strict"; | ||
var __defProp = Object.defineProperty; | ||
var __defProps = Object.defineProperties; | ||
var __getOwnPropDescs = Object.getOwnPropertyDescriptors; | ||
var __getOwnPropSymbols = Object.getOwnPropertySymbols; | ||
var __hasOwnProp = Object.prototype.hasOwnProperty; | ||
var __propIsEnum = Object.prototype.propertyIsEnumerable; | ||
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value; | ||
var __spreadValues = (a, b) => { | ||
for (var prop in b || (b = {})) | ||
if (__hasOwnProp.call(b, prop)) | ||
__defNormalProp(a, prop, b[prop]); | ||
if (__getOwnPropSymbols) | ||
for (var prop of __getOwnPropSymbols(b)) { | ||
if (__propIsEnum.call(b, prop)) | ||
__defNormalProp(a, prop, b[prop]); | ||
} | ||
return a; | ||
}; | ||
var __spreadProps = (a, b) => __defProps(a, __getOwnPropDescs(b)); | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
// src/rate.ts | ||
import { sortBy, identity, range } from "ramda"; | ||
import unwind from "sort-unwind"; | ||
// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
// src/util.ts | ||
import { zip } from "ramda"; | ||
var sum = (a, b) => a + b; | ||
var rankings = (teams, rank = []) => { | ||
const teamScores = teams.map((_, i) => rank[i] || i); | ||
const outRank = new Array(teams.length); | ||
let s = 0; | ||
for (let j = 0; j < teamScores.length; j += 1) { | ||
if (j > 0 && teamScores[j - 1] < teamScores[j]) { | ||
s = j; | ||
} | ||
outRank[j] = s; | ||
} | ||
return outRank; | ||
}; | ||
var teamRating = (options) => (game) => { | ||
const rank = rankings(game, options.rank); | ||
return game.map((team, i) => [ | ||
// mu[i] | ||
team.map(({ mu }) => mu).reduce(sum, 0), | ||
// sigma^2[i] | ||
team.map(({ sigma }) => sigma * sigma).reduce(sum, 0), | ||
// (original team data) | ||
team, | ||
// rank[i] | ||
rank[i] | ||
]); | ||
}; | ||
var utilC = (options) => { | ||
const { BETASQ } = constants_default(options); | ||
return (teamRatings) => Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0)); | ||
}; | ||
var utilSumQ = (teamRatings, c) => teamRatings.map( | ||
([_qMu, _qSigmaSq, _qTeam, qRank]) => teamRatings.filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank).map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c)).reduce(sum, 0) | ||
); | ||
var utilA = (teamRatings) => teamRatings.map( | ||
([_iMu, _iSigmaSq, _iTeam, iRank]) => teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length | ||
); | ||
var gamma = (options) => { | ||
var _a; | ||
return (_a = options.gamma) != null ? _a : ( | ||
// default to iSigma / c | ||
(c, _k, _mu, sigmaSq, _team, _qRank) => Math.sqrt(sigmaSq) / c | ||
); | ||
}; | ||
var util_default = (options) => ({ | ||
utilC: utilC(options), | ||
teamRating: teamRating(options), | ||
gamma: gamma(options) | ||
}); | ||
exports.default = void 0; | ||
var _ramda = require("ramda"); | ||
var _sortUnwind = _interopRequireDefault(require("sort-unwind")); | ||
var _constants = _interopRequireDefault(require("./constants")); | ||
var _models = require("./models"); | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
const rate = (teams, options = {}) => { | ||
const { | ||
LIMIT_SIGMA, | ||
TAU | ||
} = (0, _constants.default)(options); | ||
const { | ||
model = _models.plackettLuce | ||
} = options; | ||
// src/models/plackett-luce.ts | ||
var model = (game, options = {}) => { | ||
const { EPSILON } = constants_default(options); | ||
const { utilC: utilC2, teamRating: teamRating2, gamma: gamma2 } = util_default(options); | ||
const teamRatings = teamRating2(game); | ||
const c = utilC2(teamRatings); | ||
const sumQ = utilSumQ(teamRatings, c); | ||
const a = utilA(teamRatings); | ||
return teamRatings.map((iTeamRating, i) => { | ||
const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating; | ||
const iMuOverCe = Math.exp(iMu / c); | ||
const [omegaSum, deltaSum] = teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => qRank <= iRank).reduce( | ||
([omega, delta], [_], q) => { | ||
const quotient = iMuOverCe / sumQ[q]; | ||
return [omega + (i === q ? 1 - quotient : -quotient) / a[q], delta + quotient * (1 - quotient) / a[q]]; | ||
}, | ||
[0, 0] | ||
); | ||
const iGamma = gamma2(c, teamRatings.length, ...iTeamRating); | ||
const iOmega = omegaSum * (iSigmaSq / c); | ||
const iDelta = iGamma * deltaSum * (iSigmaSq / c ** 2); | ||
return iTeam.map(({ mu, sigma }) => ({ | ||
mu: mu + sigma ** 2 / iSigmaSq * iOmega, | ||
sigma: sigma * Math.sqrt(Math.max(1 - sigma ** 2 / iSigmaSq * iDelta, EPSILON)) | ||
})); | ||
}); | ||
}; | ||
var plackett_luce_default = model; | ||
// src/rate.ts | ||
var rate = (teams, options = {}) => { | ||
var _a, _b, _c; | ||
const { LIMIT_SIGMA, TAU } = constants_default(options); | ||
const { model: model2 = plackett_luce_default } = options; | ||
let processedTeams = teams; | ||
// if tau is provided, use additive dynamics factor to prevent sigma from dropping too low. | ||
// using this will ensure the rating will stay more pliable after many games | ||
if (options.tau) { | ||
const tauSquared = TAU * TAU; | ||
processedTeams = teams.map(team => team.map(p => ({ | ||
...p, | ||
sigma: Math.sqrt(p.sigma * p.sigma + tauSquared) | ||
}))); | ||
processedTeams = teams.map( | ||
(team) => team.map((p) => __spreadProps(__spreadValues({}, p), { | ||
sigma: Math.sqrt(p.sigma * p.sigma + tauSquared) | ||
})) | ||
); | ||
} | ||
// if rank provided, use it, otherwise transition scores and use that | ||
const rank = options.rank ?? options.score?.map(points => -points) ?? (0, _ramda.range)(1, teams.length + 1); | ||
const [orderedTeams, tenet] = (0, _sortUnwind.default)(rank, processedTeams); | ||
const newRatings = model(orderedTeams, { | ||
...options, | ||
rank: (0, _ramda.sortBy)(_ramda.identity, rank) | ||
}); | ||
let [reorderedTeams] = (0, _sortUnwind.default)(tenet, newRatings); | ||
// limitSigma prevents sigma from ever going up which can happen when using a tau value. | ||
// this helps prevent ordinal from ever dropping after winning a game which can feel unfair | ||
const rank = (_c = (_b = options.rank) != null ? _b : (_a = options.score) == null ? void 0 : _a.map((points) => -points)) != null ? _c : range(1, teams.length + 1); | ||
const [orderedTeams, tenet] = unwind(rank, processedTeams); | ||
const newRatings = model2(orderedTeams, __spreadProps(__spreadValues({}, options), { | ||
rank: sortBy(identity, rank) | ||
})); | ||
let [reorderedTeams] = unwind(tenet, newRatings); | ||
if (TAU && LIMIT_SIGMA) { | ||
reorderedTeams = reorderedTeams.map((team, i) => team.map((p, j) => ({ | ||
...p, | ||
sigma: Math.min(p.sigma, teams[i][j].sigma) | ||
}))); | ||
reorderedTeams = reorderedTeams.map( | ||
(team, i) => team.map((p, j) => __spreadProps(__spreadValues({}, p), { | ||
sigma: Math.min(p.sigma, teams[i][j].sigma) | ||
})) | ||
); | ||
} | ||
return reorderedTeams; | ||
}; | ||
var _default = exports.default = rate; | ||
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T2MsY0FBYztBQUN2QixDQUFDO0FBQUEsSUFBQUksUUFBQSxHQUFBQyxPQUFBLENBQUFsQyxPQUFBLEdBRWNDLElBQUkiLCJpZ25vcmVMaXN0IjpbXX0= | ||
var rate_default = rate; | ||
export { | ||
rate_default as default | ||
}; | ||
//# sourceMappingURL=data:application/json;base64,{
  "version": 3,
  "sources": ["../src/rate.ts", "../src/constants.ts", "../src/util.ts", "../src/models/plackett-luce.ts"],
  "sourcesContent": ["import { sortBy, identity, range } from 'ramda'\nimport unwind from 'sort-unwind'\n\nimport { Rating, Options, Team } from './types'\nimport constants from './constants'\nimport { plackettLuce } from './models'\n\nconst rate = (teams: Team[], options: Options = {}): Team[] => {\n  const { LIMIT_SIGMA, TAU } = constants(options)\n  const { model = plackettLuce } = options\n  let processedTeams = teams\n\n  // if tau is provided, use additive dynamics factor to prevent sigma from dropping too low.\n  // using this will ensure the rating will stay more pliable after many games\n  if (options.tau) {\n    const tauSquared = TAU * TAU\n    processedTeams = teams.map((team) =>\n      team.map((p) => ({\n        ...p,\n        sigma: Math.sqrt(p.sigma * p.sigma + tauSquared),\n      }))\n    )\n  }\n\n  // if rank provided, use it, otherwise transition scores and use that\n  const rank = options.rank ?? options.score?.map((points) => -points) ?? range(1, teams.length + 1)\n\n  const [orderedTeams, tenet] = unwind(rank, processedTeams)\n  const newRatings = model(orderedTeams, {\n    ...options,\n    rank: sortBy(identity, rank),\n  })\n  let [reorderedTeams] = unwind(tenet, newRatings)\n\n  // limitSigma prevents sigma from ever going up which can happen when using a tau value.\n  // this helps prevent ordinal from ever dropping after winning a game which can feel unfair\n  if (TAU && LIMIT_SIGMA) {\n    reorderedTeams = reorderedTeams.map((team: Rating[], i: number) =>\n      team.map((p, j) => ({\n        ...p,\n        sigma: Math.min(p.sigma, teams[i][j].sigma),\n      }))\n    )\n  }\n\n  return reorderedTeams\n}\n\nexport default rate\n", "import { Options } from './types'\n\nconst builder = (options: Options) => {\n  // i'd love to know of a better way to do this\n  const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 0.0001 } = options\n  const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options\n  const betaSq = beta ** 2\n\n  return {\n    SIGMA: sigma,\n    MU: mu,\n    EPSILON: epsilon,\n    TWOBETASQ: 2 * betaSq,\n    BETA: beta,\n    BETASQ: betaSq,\n    Z: z,\n    TAU: tau,\n    LIMIT_SIGMA: limitSigma,\n  }\n}\n\nexport default builder\n", "import { zip } from 'ramda'\nimport constants from './constants'\nimport { Rating, Options, Gamma, Team, Rank } from './types'\n\nexport type TeamMu = number\n\nexport type TeamSigmaSq = number\n\nexport type TeamRating = [TeamMu, TeamSigmaSq, Team, Rank]\n\nexport const sum = (a: number, b: number) => a + b\n\nexport const score = (q: number, i: number) => {\n  if (q < i) {\n    return 0.0\n  }\n  if (q > i) {\n    return 1.0\n  }\n  // q === i\n  return 0.5\n}\n\nexport const rankings = (teams: Team[], rank: number[] = []) => {\n  const teamScores = teams.map((_, i) => rank[i] || i)\n  const outRank = new Array(teams.length)\n\n  let s = 0\n  for (let j = 0; j < teamScores.length; j += 1) {\n    if (j > 0 && teamScores[j - 1] < teamScores[j]) {\n      s = j\n    }\n    outRank[j] = s\n  }\n  return outRank\n}\n\n// this is basically shared code, precomputed for every model\nconst teamRating =\n  (options: Options) =>\n  (game: Team[]): TeamRating[] => {\n    const rank = rankings(game, options.rank)\n    return game.map((team, i) => [\n      // mu[i]\n      team.map(({ mu }) => mu).reduce(sum, 0),\n      // sigma^2[i]\n      team.map(({ sigma }) => sigma * sigma).reduce(sum, 0),\n      // (original team data)\n      team,\n      // rank[i]\n      rank[i],\n    ])\n  }\n\nexport const ladderPairs = <T>(ranks: T[]): T[][] => {\n  const size = ranks.length\n  const left = [undefined, ...ranks.slice(0, size - 1)]\n  const right = [...ranks.slice(1), undefined]\n  return zip(left, right).map(([l, r]) => {\n    if (l !== undefined && r !== undefined) return [l, r]\n    if (l !== undefined && r === undefined) return [l]\n    if (l === undefined && r !== undefined) return [r]\n    return [] // this should really only happen when size === 1\n  })\n}\n\nconst utilC = (options: Options) => {\n  const { BETASQ } = constants(options)\n  return (teamRatings: TeamRating[]) =>\n    Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0))\n}\n\nexport const utilSumQ = (teamRatings: TeamRating[], c: number) =>\n  teamRatings.map(([_qMu, _qSigmaSq, _qTeam, qRank]) =>\n    teamRatings\n      .filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank)\n      .map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c))\n      .reduce(sum, 0)\n  )\n\nexport const utilA = (teamRatings: TeamRating[]) =>\n  teamRatings.map(\n    ([_iMu, _iSigmaSq, _iTeam, iRank]) =>\n      teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length\n  )\n\nexport const gamma = (options: Options): Gamma =>\n  options.gamma ??\n  // default to iSigma / c\n  ((c: number, _k: number, _mu: number, sigmaSq: number, _team: Rating[], _qRank: number) => Math.sqrt(sigmaSq) / c)\n\nexport default (options: Options) => ({\n  utilC: utilC(options),\n  teamRating: teamRating(options),\n  gamma: gamma(options),\n})\n", "import util, { utilSumQ, utilA } from '../util'\nimport constants from '../constants'\nimport { Rating, Options, Model } from '../types'\n\nconst model: Model = (game: Rating[][], options: Options = {}) => {\n  const { EPSILON } = constants(options)\n  const { utilC, teamRating, gamma } = util(options)\n  const teamRatings = teamRating(game)\n  const c = utilC(teamRatings)\n  const sumQ = utilSumQ(teamRatings, c)\n  const a = utilA(teamRatings)\n\n  return teamRatings.map((iTeamRating, i) => {\n    const [iMu, iSigmaSq, iTeam, iRank] = iTeamRating\n    const iMuOverCe = Math.exp(iMu / c) // tmp1\n    const [omegaSum, deltaSum] = teamRatings\n      .filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => qRank <= iRank)\n      .reduce(\n        ([omega, delta], [_], q) => {\n          const quotient = iMuOverCe / sumQ[q]\n          return [omega + (i === q ? 1 - quotient : -quotient) / a[q], delta + (quotient * (1 - quotient)) / a[q]]\n        },\n        [0, 0]\n      )\n\n    const iGamma = gamma(c, teamRatings.length, ...iTeamRating)\n    const iOmega = omegaSum * (iSigmaSq / c)\n    const iDelta = iGamma * deltaSum * (iSigmaSq / c ** 2)\n\n    return iTeam.map(({ mu, sigma }) => ({\n      mu: mu + (sigma ** 2 / iSigmaSq) * iOmega,\n      sigma: sigma * Math.sqrt(Math.max(1 - (sigma ** 2 / iSigmaSq) * iDelta, EPSILON)),\n    }))\n  })\n}\n\nexport default model\n"],
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  "names": ["utilC", "teamRating", "gamma", "model"]
}
 |
@@ -1,2 +0,3 @@ | ||
import { Options, Rating } from './types'; | ||
import { Options, Rating } from './types.js'; | ||
declare const rating: (init?: { | ||
@@ -6,2 +7,3 @@ mu?: number; | ||
}, options?: Options) => Rating; | ||
export default rating; | ||
export { rating as default }; |
@@ -1,16 +0,46 @@ | ||
"use strict"; | ||
var __defProp = Object.defineProperty; | ||
var __getOwnPropSymbols = Object.getOwnPropertySymbols; | ||
var __hasOwnProp = Object.prototype.hasOwnProperty; | ||
var __propIsEnum = Object.prototype.propertyIsEnumerable; | ||
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value; | ||
var __spreadValues = (a, b) => { | ||
for (var prop in b || (b = {})) | ||
if (__hasOwnProp.call(b, prop)) | ||
__defNormalProp(a, prop, b[prop]); | ||
if (__getOwnPropSymbols) | ||
for (var prop of __getOwnPropSymbols(b)) { | ||
if (__propIsEnum.call(b, prop)) | ||
__defNormalProp(a, prop, b[prop]); | ||
} | ||
return a; | ||
}; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
}); | ||
exports.default = void 0; | ||
var _constants = require("./constants"); | ||
const rating = (init, options = {}) => ({ | ||
mu: init?.mu ?? (0, _constants.mu)(options), | ||
sigma: init?.sigma ?? (0, _constants.sigma)({ | ||
...options, | ||
mu: init?.mu | ||
}) | ||
}); | ||
var _default = exports.default = rating; | ||
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// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
// src/rating.ts | ||
var rating = (init, options = {}) => { | ||
const { MU: mu, SIGMA: sigma } = constants_default(__spreadValues(__spreadValues({}, options), init)); | ||
return { mu, sigma }; | ||
}; | ||
var rating_default = rating; | ||
export { | ||
rating_default as default | ||
}; | ||
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@@ -1,7 +0,9 @@ | ||
export declare const phiMajor: (x: number) => number; | ||
export declare const phiMajorInverse: (x: number) => number; | ||
export declare const phiMinor: (x: number) => number; | ||
export declare const v: (x: number, t: number) => number; | ||
export declare const w: (x: number, t: number) => number; | ||
export declare const vt: (x: number, t: number) => number; | ||
export declare const wt: (x: number, t: number) => number; | ||
declare const phiMajor: (x: number) => number; | ||
declare const phiMajorInverse: (x: number) => number; | ||
declare const phiMinor: (x: number) => number; | ||
declare const v: (x: number, t: number) => number; | ||
declare const w: (x: number, t: number) => number; | ||
declare const vt: (x: number, t: number) => number; | ||
declare const wt: (x: number, t: number) => number; | ||
export { phiMajor, phiMajorInverse, phiMinor, v, vt, w, wt }; |
@@ -1,18 +0,8 @@ | ||
"use strict"; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
}); | ||
exports.wt = exports.w = exports.vt = exports.v = exports.phiMinor = exports.phiMajorInverse = exports.phiMajor = void 0; | ||
var _gaussian = _interopRequireDefault(require("gaussian")); | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
// use a standard normal distribution - mean of zero, stddev/variance of one | ||
const normal = (0, _gaussian.default)(0, 1); | ||
const phiMajor = x => normal.cdf(x); | ||
exports.phiMajor = phiMajor; | ||
const phiMajorInverse = x => normal.ppf(x); | ||
exports.phiMajorInverse = phiMajorInverse; | ||
const phiMinor = x => normal.pdf(x); | ||
exports.phiMinor = phiMinor; | ||
const v = (x, t) => { | ||
// src/statistics.ts | ||
import gaussian from "gaussian"; | ||
var normal = gaussian(0, 1); | ||
var phiMajor = (x) => normal.cdf(x); | ||
var phiMajorInverse = (x) => normal.ppf(x); | ||
var phiMinor = (x) => normal.pdf(x); | ||
var v = (x, t) => { | ||
const xt = x - t; | ||
@@ -22,4 +12,3 @@ const denom = phiMajor(xt); | ||
}; | ||
exports.v = v; | ||
const w = (x, t) => { | ||
var w = (x, t) => { | ||
const xt = x - t; | ||
@@ -32,4 +21,3 @@ const denom = phiMajor(xt); | ||
}; | ||
exports.w = w; | ||
const vt = (x, t) => { | ||
var vt = (x, t) => { | ||
const xx = Math.abs(x); | ||
@@ -44,9 +32,16 @@ const b = phiMajor(t - xx) - phiMajor(-t - xx); | ||
}; | ||
exports.vt = vt; | ||
const wt = (x, t) => { | ||
var wt = (x, t) => { | ||
const xx = Math.abs(x); | ||
const b = phiMajor(t - xx) - phiMajor(-t - xx); | ||
return b < Number.EPSILON ? 1.0 : ((t - xx) * phiMinor(t - xx) + (t + xx) * phiMinor(-t - xx)) / b + vt(x, t) * vt(x, t); | ||
return b < Number.EPSILON ? 1 : ((t - xx) * phiMinor(t - xx) + (t + xx) * phiMinor(-t - xx)) / b + vt(x, t) * vt(x, t); | ||
}; | ||
exports.wt = wt; | ||
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| ||
export { | ||
phiMajor, | ||
phiMajorInverse, | ||
phiMinor, | ||
v, | ||
vt, | ||
w, | ||
wt | ||
}; | ||
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@@ -1,10 +0,10 @@ | ||
export type Rating = { | ||
type Rating = { | ||
mu: number; | ||
sigma: number; | ||
}; | ||
export type Team = Rating[]; | ||
export type Rank = number; | ||
export type Gamma = (c: number, k: number, mu: number, sigmaSq: number, team: Rating[], qRank: number) => number; | ||
export type Model = (teams: Team[], options?: Options) => Team[]; | ||
export type Options = { | ||
type Team = Rating[]; | ||
type Rank = number; | ||
type Gamma = (c: number, k: number, mu: number, sigmaSq: number, team: Rating[], qRank: number) => number; | ||
type Model = (teams: Team[], options?: Options) => Team[]; | ||
type Options = { | ||
z?: number; | ||
@@ -24,1 +24,3 @@ mu?: number; | ||
}; | ||
export type { Gamma, Model, Options, Rank, Rating, Team }; |
@@ -1,6 +0,1 @@ | ||
"use strict"; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
}); | ||
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@@ -1,12 +0,13 @@ | ||
import { Options, Gamma, Team, Rank } from './types'; | ||
export type TeamMu = number; | ||
export type TeamSigmaSq = number; | ||
export type TeamRating = [TeamMu, TeamSigmaSq, Team, Rank]; | ||
export declare const sum: (a: number, b: number) => number; | ||
export declare const score: (q: number, i: number) => 0 | 1 | 0.5; | ||
export declare const rankings: (teams: Team[], rank?: number[]) => any[]; | ||
export declare const ladderPairs: <T>(ranks: T[]) => T[][]; | ||
export declare const utilSumQ: (teamRatings: TeamRating[], c: number) => number[]; | ||
export declare const utilA: (teamRatings: TeamRating[]) => number[]; | ||
export declare const gamma: (options: Options) => Gamma; | ||
import { Team, Rank, Options, Gamma } from './types.js'; | ||
type TeamMu = number; | ||
type TeamSigmaSq = number; | ||
type TeamRating = [TeamMu, TeamSigmaSq, Team, Rank]; | ||
declare const sum: (a: number, b: number) => number; | ||
declare const score: (q: number, i: number) => 0 | 1 | 0.5; | ||
declare const rankings: (teams: Team[], rank?: number[]) => any[]; | ||
declare const ladderPairs: <T>(ranks: T[]) => T[][]; | ||
declare const utilSumQ: (teamRatings: TeamRating[], c: number) => number[]; | ||
declare const utilA: (teamRatings: TeamRating[]) => number[]; | ||
declare const gamma: (options: Options) => Gamma; | ||
declare const _default: (options: Options) => { | ||
@@ -17,2 +18,3 @@ utilC: (teamRatings: TeamRating[]) => number; | ||
}; | ||
export default _default; | ||
export { type TeamMu, type TeamRating, type TeamSigmaSq, _default as default, gamma, ladderPairs, rankings, score, sum, utilA, utilSumQ }; |
130
dist/util.js
@@ -1,24 +0,35 @@ | ||
"use strict"; | ||
// src/util.ts | ||
import { zip } from "ramda"; | ||
Object.defineProperty(exports, "__esModule", { | ||
value: true | ||
}); | ||
exports.utilSumQ = exports.utilA = exports.sum = exports.score = exports.rankings = exports.ladderPairs = exports.gamma = exports.default = void 0; | ||
var _ramda = require("ramda"); | ||
var _constants = _interopRequireDefault(require("./constants")); | ||
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; } | ||
const sum = (a, b) => a + b; | ||
exports.sum = sum; | ||
const score = (q, i) => { | ||
// src/constants.ts | ||
var builder = (options) => { | ||
const { z = 3, mu = 25, preventSigmaIncrease = false, epsilon = 1e-4 } = options; | ||
const { tau = mu / 300, sigma = mu / z, beta = sigma / 2, limitSigma = preventSigmaIncrease } = options; | ||
const betaSq = beta ** 2; | ||
return { | ||
SIGMA: sigma, | ||
MU: mu, | ||
EPSILON: epsilon, | ||
TWOBETASQ: 2 * betaSq, | ||
BETA: beta, | ||
BETASQ: betaSq, | ||
Z: z, | ||
TAU: tau, | ||
LIMIT_SIGMA: limitSigma | ||
}; | ||
}; | ||
var constants_default = builder; | ||
// src/util.ts | ||
var sum = (a, b) => a + b; | ||
var score = (q, i) => { | ||
if (q < i) { | ||
return 0.0; | ||
return 0; | ||
} | ||
if (q > i) { | ||
return 1.0; | ||
return 1; | ||
} | ||
// q === i | ||
return 0.5; | ||
}; | ||
exports.score = score; | ||
const rankings = (teams, rank = []) => { | ||
var rankings = (teams, rank = []) => { | ||
const teamScores = teams.map((_, i) => rank[i] || i); | ||
@@ -35,48 +46,44 @@ const outRank = new Array(teams.length); | ||
}; | ||
// this is basically shared code, precomputed for every model | ||
exports.rankings = rankings; | ||
const teamRating = options => game => { | ||
var teamRating = (options) => (game) => { | ||
const rank = rankings(game, options.rank); | ||
return game.map((team, i) => [ | ||
// mu[i] | ||
team.map(({ | ||
mu | ||
}) => mu).reduce(sum, 0), | ||
// sigma^2[i] | ||
team.map(({ | ||
sigma | ||
}) => sigma * sigma).reduce(sum, 0), | ||
// (original team data) | ||
team, | ||
// rank[i] | ||
rank[i]]); | ||
// mu[i] | ||
team.map(({ mu }) => mu).reduce(sum, 0), | ||
// sigma^2[i] | ||
team.map(({ sigma }) => sigma * sigma).reduce(sum, 0), | ||
// (original team data) | ||
team, | ||
// rank[i] | ||
rank[i] | ||
]); | ||
}; | ||
const ladderPairs = ranks => { | ||
var ladderPairs = (ranks) => { | ||
const size = ranks.length; | ||
const left = [undefined, ...ranks.slice(0, size - 1)]; | ||
const right = [...ranks.slice(1), undefined]; | ||
return (0, _ramda.zip)(left, right).map(([l, r]) => { | ||
if (l !== undefined && r !== undefined) return [l, r]; | ||
if (l !== undefined && r === undefined) return [l]; | ||
if (l === undefined && r !== undefined) return [r]; | ||
return []; // this should really only happen when size === 1 | ||
const left = [void 0, ...ranks.slice(0, size - 1)]; | ||
const right = [...ranks.slice(1), void 0]; | ||
return zip(left, right).map(([l, r]) => { | ||
if (l !== void 0 && r !== void 0) return [l, r]; | ||
if (l !== void 0 && r === void 0) return [l]; | ||
if (l === void 0 && r !== void 0) return [r]; | ||
return []; | ||
}); | ||
}; | ||
exports.ladderPairs = ladderPairs; | ||
const utilC = options => { | ||
const { | ||
BETASQ | ||
} = (0, _constants.default)(options); | ||
return teamRatings => Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0)); | ||
var utilC = (options) => { | ||
const { BETASQ } = constants_default(options); | ||
return (teamRatings) => Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0)); | ||
}; | ||
const utilSumQ = (teamRatings, c) => teamRatings.map(([_qMu, _qSigmaSq, _qTeam, qRank]) => teamRatings.filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank).map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c)).reduce(sum, 0)); | ||
exports.utilSumQ = utilSumQ; | ||
const utilA = teamRatings => teamRatings.map(([_iMu, _iSigmaSq, _iTeam, iRank]) => teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length); | ||
exports.utilA = utilA; | ||
const gamma = options => options.gamma ?? ( | ||
// default to iSigma / c | ||
(c, _k, _mu, sigmaSq, _team, _qRank) => Math.sqrt(sigmaSq) / c); | ||
exports.gamma = gamma; | ||
var _default = options => ({ | ||
var utilSumQ = (teamRatings, c) => teamRatings.map( | ||
([_qMu, _qSigmaSq, _qTeam, qRank]) => teamRatings.filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank).map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c)).reduce(sum, 0) | ||
); | ||
var utilA = (teamRatings) => teamRatings.map( | ||
([_iMu, _iSigmaSq, _iTeam, iRank]) => teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length | ||
); | ||
var gamma = (options) => { | ||
var _a; | ||
return (_a = options.gamma) != null ? _a : ( | ||
// default to iSigma / c | ||
(c, _k, _mu, sigmaSq, _team, _qRank) => Math.sqrt(sigmaSq) / c | ||
); | ||
}; | ||
var util_default = (options) => ({ | ||
utilC: utilC(options), | ||
@@ -86,3 +93,12 @@ teamRating: teamRating(options), | ||
}); | ||
exports.default = _default; | ||
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Rank]\n\nexport const sum = (a: number, b: number) => a + b\n\nexport const score = (q: number, i: number) => {\n  if (q < i) {\n    return 0.0\n  }\n  if (q > i) {\n    return 1.0\n  }\n  // q === i\n  return 0.5\n}\n\nexport const rankings = (teams: Team[], rank: number[] = []) => {\n  const teamScores = teams.map((_, i) => rank[i] || i)\n  const outRank = new Array(teams.length)\n\n  let s = 0\n  for (let j = 0; j < teamScores.length; j += 1) {\n    if (j > 0 && teamScores[j - 1] < teamScores[j]) {\n      s = j\n    }\n    outRank[j] = s\n  }\n  return outRank\n}\n\n// this is basically shared code, precomputed for every model\nconst teamRating =\n  (options: Options) =>\n  (game: Team[]): TeamRating[] => {\n    const rank = rankings(game, options.rank)\n    return game.map((team, i) => [\n      // mu[i]\n      team.map(({ mu }) => mu).reduce(sum, 0),\n      // sigma^2[i]\n      team.map(({ sigma }) => sigma * sigma).reduce(sum, 0),\n      // (original team data)\n      team,\n      // rank[i]\n      rank[i],\n    ])\n  }\n\nexport const ladderPairs = <T>(ranks: T[]): T[][] => {\n  const size = ranks.length\n  const left = [undefined, ...ranks.slice(0, size - 1)]\n  const right = [...ranks.slice(1), undefined]\n  return zip(left, right).map(([l, r]) => {\n    if (l !== undefined && r !== undefined) return [l, r]\n    if (l !== undefined && r === undefined) return [l]\n    if (l === undefined && r !== undefined) return [r]\n    return [] // this should really only happen when size === 1\n  })\n}\n\nconst utilC = (options: Options) => {\n  const { BETASQ } = constants(options)\n  return (teamRatings: TeamRating[]) =>\n    Math.sqrt(teamRatings.map(([_teamMu, teamSigmaSq, _team, _rank]) => teamSigmaSq + BETASQ).reduce(sum, 0))\n}\n\nexport const utilSumQ = (teamRatings: TeamRating[], c: number) =>\n  teamRatings.map(([_qMu, _qSigmaSq, _qTeam, qRank]) =>\n    teamRatings\n      .filter(([_iMu, _iSigmaSq, _iTeam, iRank]) => iRank >= qRank)\n      .map(([iMu, _iSigmaSq, _iTeam, _iRank]) => Math.exp(iMu / c))\n      .reduce(sum, 0)\n  )\n\nexport const utilA = (teamRatings: TeamRating[]) =>\n  teamRatings.map(\n    ([_iMu, _iSigmaSq, _iTeam, iRank]) =>\n      teamRatings.filter(([_qMu, _qSigmaSq, _qTeam, qRank]) => iRank === qRank).length\n  )\n\nexport const gamma = (options: Options): Gamma =>\n  options.gamma ??\n  // default to iSigma / c\n  ((c: number, _k: number, _mu: number, sigmaSq: number, _team: Rating[], _qRank: number) => Math.sqrt(sigmaSq) / c)\n\nexport default (options: Options) => ({\n  utilC: utilC(options),\n  teamRating: teamRating(options),\n  gamma: 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| ||
export { | ||
util_default as default, | ||
gamma, | ||
ladderPairs, | ||
rankings, | ||
score, | ||
sum, | ||
utilA, | ||
utilSumQ | ||
}; | ||
//# 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|
{ | ||
"name": "openskill", | ||
"version": "4.0.0", | ||
"version": "4.0.1", | ||
"description": "Weng-Lin Bayesian approximation method for online skill-ranking.", | ||
"scripts": { | ||
"build": "npm run build:typescript && npm run build:babel", | ||
"build:babel": "babel src --out-dir dist --extensions \".js,.ts\" --source-maps inline", | ||
"build:typescript": "tsc --emitDeclarationOnly", | ||
"build": "tsup", | ||
"lint": "eslint .", | ||
@@ -15,2 +13,5 @@ "prepare": "husky && npm run build", | ||
}, | ||
"engines": { | ||
"node": ">=18.0.0" | ||
}, | ||
"type": "module", | ||
@@ -39,7 +40,2 @@ "main": "./dist/index.js", | ||
"devDependencies": { | ||
"@babel/cli": "7.24.7", | ||
"@babel/core": "7.24.7", | ||
"@babel/preset-env": "7.24.7", | ||
"@babel/preset-typescript": "7.24.7", | ||
"@babel/register": "7.24.6", | ||
"@eslint/js": "9.6.0", | ||
@@ -49,2 +45,4 @@ "@philihp/prettier-config": "1.0.0", | ||
"@types/jest": "29.5.12", | ||
"esbuild": "0.23.0", | ||
"esbuild-jest": "0.5.0", | ||
"eslint": "8.57.0", | ||
@@ -57,2 +55,3 @@ "eslint-config-prettier": "9.1.0", | ||
"lint-staged": "15.2.7", | ||
"tsup": "8.1.0", | ||
"typescript": "5.5.3", | ||
@@ -62,7 +61,2 @@ "typescript-eslint": "7.15.0" | ||
"prettier": "@philihp/prettier-config", | ||
"jest": { | ||
"modulePathIgnorePatterns": [ | ||
"dist/" | ||
] | ||
}, | ||
"dependencies": { | ||
@@ -69,0 +63,0 @@ "@types/gaussian": "1.2.2", |
Major refactor
Supply chain riskPackage has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.
Found 1 instance in 1 package
Major refactor
Supply chain riskPackage has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.
Found 1 instance in 1 package
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