bow

bow

Source:

BOW

Methods

(static) cosine(a, b) → {number}

Source:

Computes the cosine distance between the input bag of words (bow) a and b and returns a value between 0 and 1.

Example
// bow for "the dog chased the cat"
var a = { the: 2, dog: 1, chased: 1, cat: 1 };
// bow  for "the cat chased the mouse"
var b = { the: 2, cat: 1, chased: 1, mouse: 1 };
cosine( a, b );
// -> 0.14285714285714302
// Note the bow could have been created directly by
// using "tokens.bow()" from the "wink-nlp-utils".
Parameters:
Name Type Description
a object

the first set of bows i.e word (i.e. key) and it's frequency (i.e. value) pairs.

b object

the second set of bows.

Returns:

cosine distance between a and b.

Type
number