module Newral::ErrorCalculation
Public Class Methods
mean_square( results, expected )
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# File lib/newral/error_calculation.rb, line 21 def self.mean_square( results, expected ) sum = sum_of_squares( results, expected ) sum.to_f/results.size end
root_mean_square( results, expected )
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# File lib/newral/error_calculation.rb, line 16 def self.root_mean_square( results, expected ) sum = sum_of_squares( results, expected ) (sum.to_f/results.size)**0.5 end
sum_of_squares( results, expected )
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# File lib/newral/error_calculation.rb, line 4 def self.sum_of_squares( results, expected ) sum = 0 raise DimensionsNotMatching, "results: #{ results.size } expected: #{ expected.size }" unless expected.size == results.size results.each_with_index do |result,idx| Array(result).each_with_index do |r,r_idx| exp = Array(expected[idx]) sum = sum+(r-exp[r_idx])**2 end end sum end