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markovian-nlp
Advanced tools
markovian-nlp
Quick start
As an isomorphic JavaScript package, there are multiple ways for clients, servers, and bundlers to start using this library. Several methods do not require installation.
RunKit
RunKit provides one of the least difficult ways to get started:
CodePen
Declare imports in the JS section to get started:
import {
ngramsDistribution,
sentences,
} from 'https://unpkg.com/markovian-nlp@latest?module';
const sentence = sentences({ document: 'oh me, oh my' });
console.log(sentence);
// example output: 'oh me oh me oh my'
Browsers
Insert the following element within the <head> tag of an HTML document:
<script src="https://unpkg.com/markovian-nlp@latest"></script>
After the script is loaded, the markovian browser global is exposed:
const sentence = markovian.sentences({ document: 'oh me, oh my' });
console.log(sentence);
// example output: ['oh me oh me oh my']
Node.js
With npm installed, run terminal command:
npm i markovian-nlp
Once installed, declare method imports at the top of each JavaScript file they will be used.
ES2015
Recommended
import {
ngramsDistribution,
sentences,
} from 'markovian-nlp';
CommonJS
const {
ngramsDistribution,
sentences,
} = require('markovian-nlp');
Usage
Markov text generation
Generate text sentences from a Markov process.
Potential applications: Natural language generation
Generate sentences
Optionally providing a seed generates deterministic sentences.
In this example, document is text from this source:
sentences({
count: 3,
document: 'That there is constant succession and flux of ideas in our minds...',
seed: 1,
});
// output: [
// 'i would promote introduce a constant succession and hindering the path...',
// 'he that train they seem to be glad to be done as may be avoided of our thoughts...',
// 'this wandering of attention and yet for ought i know this wandering thoughts i would promote...',
// ]
View n-grams distribution
View the n-grams distribution of text.
Potential applications: Markov models
ngramsDistribution('birds have featured in culture and art since prehistoric times');
// output: {
// and: { _end: 0, _start: 0, art: 1 },
// art: { _end: 0, _start: 0, since: 1 },
// birds: { _end: 0, _start: 1, have: 1 },
// culture: { _end: 0, _start: 0, and: 1 },
// featured: { _end: 0, _start: 0, in: 1 },
// have: { _end: 0, _start: 0, featured: 1 },
// in: { _end: 0, _start: 0, culture: 1 },
// prehistoric: { _end: 0, _start: 0, times: 1 },
// since: { _end: 0, _start: 0, prehistoric: 1 },
// times: { _end: 1, _start: 0 },
// }
Each number represents the sum of occurrences.
| startgram | endgram | bigrams |
|---|---|---|
| "birds" | "times" | all remaining keys ("have featured", "featured in", etc.) |
API
ngramsDistribution(document || ngramsDistribution)
ngramsDistribution(Array(document || ngramsDistribution[, ...]))
Input
| type | description |
|---|---|
| String | document (corpus or text) |
| Object | ngramsDistribution (equivalent to identity, i.e.: this method's output) |
| Array[Strings...] | combine multiple document |
| Array[Objects...] | combine multiple ngramsDistribution |
| Array[Strings, Objects...] | combine multiple document and ngramsDistribution |
Return value
| type | description |
|---|---|
| Object | distributions of unigrams to startgrams, endgrams, and following bigrams |
// pseudocode signature representation (does not run)
ngramsDistribution(document) => ({
...unigrams: {
...{ ...bigram: bigramsDistribution },
_end: endgramsDistribution,
_start: startgramsDistribution,
},
});
sentences({ distribution || document[, count][, seed] })
Input
| user-defined parameter | type | optional | default value | implements | description |
|---|---|---|---|---|---|
options.count | Number | true | 1 | Number of sentences to output. | |
options.distribution | Object | required if options.document omitted | n-grams distribution used in place of text. | ||
options.document | String | required if options.distribution omitted | compromise(document) | Text used in place of n-grams distribution. | |
options.seed | Number | true | undefined | Chance(seed) | Leave undefined (default) for nondeterministic results, or specify seed for deterministic results. |
Return value
| type | description |
|---|---|
| Array[Strings...] | generated sentences |
Glossary
Learn more about computational linguistics and natural language processing (NLP) on Wikipedia.
The following terms are used in the API documentation:
| term | description |
|---|---|
| bigram | 2-gram sequence |
| deterministic | repeatable, non-random |
| endgram | final gram in a sequence |
| n-gram | contiguous gram (word) sequence |
| startgram | first gram in a sequence |
| unigram | 1-gram sequence |
Keywords
FAQs
NLP tools generate Markov sentences & models.
The npm package markovian-nlp receives a total of 111 weekly downloads. As such, markovian-nlp popularity was classified as not popular.
We found that markovian-nlp demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Package last updated on 23 Dec 2019
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