Module: Anngler::Helpers

Defined in:: lib/anngler/helpers.rb

Class Method Summary collapse

Class Method Details

.cosine_distance(a, b) ⇒ `Object`



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# File 'lib/anngler/helpers.rb', line 9

def cosine_distance(a, b)
    1 - a.dot(b) / (magnitude(a) * magnitude(b))
end

.magnitude(vec) ⇒ `Object`



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# File 'lib/anngler/helpers.rb', line 5

def magnitude(vec)
    Math.sqrt(vec.square.to_a.reduce(:+))
end