JaccardIndex.test.ts

import * as assert from 'assert'
import Cosine from '../src/core/packages/Cosine'
const cosine = new Cosine()

describe('test Cosine Similarity', () => {
  describe('similarity()', () => {
    const testData = [
      {
        first: 'french',
        second: 'quebec',
        expected: 0.3651483716701107,
      },
      {
        first: 'france',
        second: 'france',
        expected: 1,
      },
      {
        first: 'healed',
        second: 'sealed',
        expected: 0.7999999999999998,
      },
      {
        first: 'web applications',
        second: 'applications of the web',
        expected: 0.9258200997725515,
      },
      {
        first: 'a',
        second: 'a',
        expected: 1,
      },
      {
        first: 'a',
        second: 'b',
        expected: 0,
      },
      {
        first: '',
        second: '',
        expected: 1,
      },
      {
        first: 'a',
        second: '',
        expected: 0,
      },
      {
        first: '',
        second: 'a',
        expected: 0,
      },
      {
        first: 'apple event',
        second: 'apple    event',
        expected: 1,
      },
      {
        first: 'ab',
        second: 'ba',
        expected: 0.9999999999999998,
      },
    ]
    testData.forEach((td) => {
      it(`should be ${td.expected}`, () => {
        assert.equal(cosine.similarity(td.first, td.second), td.expected)
      })
    })
  })
  describe('sortMatch()', () => {})
})