Corpus Tools

Corpus Tools is a simple NPM package for performing corpus linguistic analysis. This package includes the next tools:

• Tokenizer Tool
• Concordance Tool
• N-Gram and Clusters Tools

Getting started

Install

npm install corpus-tools

Use

const ct = require('./index.js');
const text = 'Colorless green ideas sleep furiously';

const tokensList = ct.tokens(text);

console.log(tokensList); // [ 'Colorless', 'green', 'ideas', 'sleep', 'furiously' ]

With 'fs' module:

const fs = require('fs');
const ct = require('./index.js');

filePath = './path.txt';
const text = fs.readFileSync(filePath, 'utf-8');

const tokensList = ct.tokens(text);

Examples

TOKENS

Extracting tokens from a text:

const tokensList = ct.tokens(text);
console.log(tokensList); // [ 'Colorless', 'green', 'ideas', 'sleep', 'furiously' ]

Counting tokens in text:

const tokensCount = tokensList.length;
console.log(tokensCount); // 5

TYPES

Extracting types from a text:

const typesList = ct.types(text);
console.log(typesList); // { colorless: 1, green: 1, ideas: 1, sleep: 1, furiously: 1 }

Counting types:

const typesCount = Object.keys(typesList).length;
console.log(typesCount); // 5

Absolute frequency of a type:

console.log(typesList["sleep"]); // 1

Lexical richness of a text:

const lexicalRichness = ct.richness(text);
console.log(lexicalRichness); // 1

CONCORDANCE

'KWIC' (KeyWord In Context):

const concordance = ct.concordance(text, "sleep", 12);
console.log(concordance); // [ 'green ideas sleep furiously' ]

N-GRAMS

2-grams:

const brigrams = ct.n_gram(text, 2);
console.log(brigrams); // [ 'Colorless green', 'green ideas', 'ideas sleep', 'sleep furiously' ]

3-grams to 4-grams:

const n_grams = ct.n_gram(text, 3, 4);
console.log(n_grams);
/* [
  'Colorless green ideas',
  'Colorless green ideas sleep',
  'green ideas sleep',
  'green ideas sleep furiously',
  'ideas sleep furiously'
] */

CLUSTERS

Left clusters:

const clustersLeft = ct.clusters(text, "ideas", "l", 2, 3);
console.log(clustersLeft); // [ 'ideas sleep', 'ideas sleep furiously' ]

Right clusters:

const clustersRigth = ct.clusters(text, "furiously", "r", 2, 4);
console.log(clustersRigth);
/* [
  'green ideas sleep furiously',
  'ideas sleep furiously',
  'sleep furiously'
] */

License

Copyright (c) 2021, Pablo G. Guízar [email protected].

Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.