class RSemantic::Compare

Public Class Methods

cosine(vector1, vector2) click to toggle source
# 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) click to toggle source
# File lib/rsemantic/compare.rb, line 6
def similarity(vector1, vector2)
  cosine(vector1, vector2)
end