Module: SelectionMethods

Included in:
GA
Defined in:
lib/selection_methods.rb

Instance Method Summary collapse

Instance Method Details

#two_tournament ⇒ Object 



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# File 'lib/selection_methods.rb', line 2

def two_tournament
  idx1 = rand(@population.size)
  idx2 = rand(@population.size)
  while idx1==idx2
      idx2 = rand(@population.size)
  end
  @population[idx1].fitness = @fitness.call @population[idx1]
  @population[idx2].fitness = @fitness.call @population[idx2]
  return ((@population[idx1].fitness) < (@population[idx2].fitness)) ? idx1 : idx2  
end