require File.dirname(__FILE__) + '/../spec_helper'

module Semantic
  describe Compare do

    def vector(values)
      Linalg::DMatrix.columns([values])
    end

    it "should calculate cosine" do
      cosine =  Compare.cosine( vector([0.1,0.5]), vector([0.9, 0.3]) )
      cosine.should be_close(0.4961, 0.0001)
    end

  end
end