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jmarmolejos/jaccard_index.js

Created May 29, 2017 18:17
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jaccard_index.js
function findJaccardIndex(collection1, collection2) {
return _.intersection(collection1, collection2).length / _.union(collection1, collection2).length
}
console.log(findJaccardIndex("Foo".split(''), 'Bar'.split(''))); // 0
console.log(findJaccardIndex("Foo".split(''), 'Far'.split(''))); // 0.2
console.log(findJaccardIndex("Foo".split(''), 'For'.split(''))); // 0.66
console.log(findJaccardIndex("Foo".split(''), 'Foo'.split(''))); // 1
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