@sigrank/cascade

@sigrank/cascade

SigRank product facade over TTEOP canonical semantics. Pure functions only — no filesystem, no API, no auth, no transport.

Canonical TTEOP metric computation (Yield, Leverage, Velocity, output_fraction, log_leverage) is delegated to tteop-spec, the executable/reference implementation of the TTEOP protocol. This package preserves SigRank-facing aliases (SNR, 10xDEV), the 24-stage RS05 class taxonomy, operator signatures, and field ranking — all product extensions that do not redefine TTEOP semantics.

Authority chain

TTEOP (protocol specification)
  → tteop-spec@0.1.5-draft (canonical executable/reference semantics)
    → @sigrank/cascade (this package — SigRank product facade)
      → sigrank-mcp (product tooling)

This package owns:

• SNR (display alias for TTEOP output_fraction) = output / (input + output)
• 10xDEV (display alias for TTEOP log_leverage) = log10(cacheRead / input)
• RS05 24-stage class taxonomy (product extension, not TTEOP)
• Operator signatures, field ranking, percentile/rank helpers (product extensions)

Canonical TTEOP metrics (Υ Yield, Leverage, Velocity) and all null semantics, rounding (banker's rounding per SRP-METRIC-002), and edge-case behavior are owned by tteop-spec and delegated through this package.

Install

npm install @sigrank/cascade
# or
bun add @sigrank/cascade

Usage

cascade(input, output, cacheCreate, cacheRead)

Compute the full cascade from 4 token pillars. cacheCreate and cacheRead accept null for unavailable cache telemetry — null is passed through to tteop-spec so canonical null semantics apply directly (affected metrics are null, not 0). Passing 0 produces 0-valued metrics (e.g. leverage = 0/input = 0), preserving the null/zero distinction.

import { cascade } from "@sigrank/cascade";

const c = cascade(1_251_211, 11_296_121, 128_196_310, 2_555_179_769);

console.log(c.yield);     // 18436.98
console.log(c.leverage);  // 2042.2
console.log(c.velocity);  // 9.028
console.log(c.snr);       // 0.9003
console.log(c.dev10x);    // 3.31
console.log(c.class);     // "REFINER I"

// null cache = unavailable → metrics are null
const partial = cascade(1000, 5000, null, null);
console.log(partial.yield);     // null
console.log(partial.leverage);  // null
console.log(partial.dev10x);    // null
console.log(partial.velocity);  // 5
console.log(partial.snr);       // 0.8333

classify(totalTokens)

Classify an operator by total token volume into one of 24 RS05 stages.

import { classify } from "@sigrank/cascade";

classify(2_694_000_000);  // "BEARER I"
classify(0);              // "IGNITER III"

round(n, d)

Round to d decimal places using banker's rounding (round-half-to-even), delegated to tteop-spec's canonical roundHalfToEven (SRP-METRIC-002). Returns null for non-finite inputs.

import { round } from "@sigrank/cascade";

round(3.14159, 2);  // 3.14
round(Infinity, 2); // null

fieldStats(yields, leverages?, velocities?, snrs?)

Compute field statistics from an array of yields. Returns null if fewer than 5 data points.

import { fieldStats } from "@sigrank/cascade";

const stats = fieldStats([100, 200, 300, 400, 500, 600, 1000]);
// { count: 7, median_yield: 400, top_10_percent_yield: 1000, ... }

percentileOf(value, field)

Percentage of field values below the given value.

import { percentileOf } from "@sigrank/cascade";

percentileOf(900, [100, 200, 300, 400, 500, 600, 1000]); // 85.7

rankOf(value, field)

Rank of a value against a field (1 = best/highest).

import { rankOf } from "@sigrank/cascade";

rankOf(900, [100, 200, 300, 400, 500, 600, 1000]); // 2

operatorSignature(cascadeResult)

Generate a compact operating signature from cascade metrics.

import { cascade, operatorSignature } from "@sigrank/cascade";

const c = cascade(1_251_211, 11_296_121, 128_196_310, 2_555_179_769);
const sig = operatorSignature(c);
// { code: "L2042-V9.03-S0.90-C11.34", archetype: "BALANCED_ELITE", dominant_trait: "combined reuse + throughput" }

evaluateOperator(pillars, options?)

Build a full OperatorEvaluation from pillars, optionally with field data for benchmarking.

import { evaluateOperator } from "@sigrank/cascade";

const eval = evaluateOperator(
  { input: 1_251_211, output: 11_296_121, cache_read: 2_555_179_769, cache_write: 128_196_310 },
  {
    codename: "MOSES",
    fieldYields: [1000, 2000, 3000, 4000, 5000, 18436.98],
  }
);

Exports

Export	Type
cascade()	function
classify()	function
round()	function
fieldStats()	function
percentileOf()	function
rankOf()	function
operatorSignature()	function
evaluateOperator()	function
RS05_CLASS_THRESHOLDS	constant
CascadeResult	interface
OperatorEvaluation	interface
FieldStats	interface
ClassThreshold	interface

Canonical reference

MO§ES Υ 18436.98 from (1251211, 11296121, 128196310, 2555179769).

License

UNLICENSED