class RSemantic::Compare
Public Class Methods
cosine(vector1, vector2)
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# File lib/rsemantic/compare.rb, line 10 def cosine(vector1, vector2) unless vector2.nil? or vector1.nil? v1 = vector1.row v2 = vector2 score = (v1 * v2) / (vector1.norm * vector2.norm) score.nan? ? 0.0 : score end end
similarity(vector1, vector2)
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# File lib/rsemantic/compare.rb, line 6 def similarity(vector1, vector2) cosine(vector1, vector2) end