Class: AnswerFactory::Machines::PointCrossover

Inherits:
Machine
  • Object
show all
Defined in:
lib/machines/point_crossover.rb

Instance Attribute Summary

Attributes inherited from Machine

#options

Instance Method Summary collapse

Methods inherited from Machine

#initialize

Constructor Details

This class inherits a constructor from AnswerFactory::Machines::Machine

Instance Method Details

#build(batch, overridden_options = {}) ⇒ Object Also known as: generate

Raises:

  • (ArgumentError) 


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# File 'lib/machines/point_crossover.rb', line 10

def build(batch, overridden_options={})
  raise ArgumentError, "PointCrossover#build cannot process a #{batch.class}" unless
    batch.kind_of?(Batch)
  
  all_options = @options.merge(overridden_options)
    
  replicates = all_options[:replicates] || 1
  
  result = Batch.new
  number_of_parents = batch.length
  
  batch.each do |answer|
    replicates.times do
      parents = batch.sample(2)
      mom = parents[0]
      dad = parents[1]
      
      mom_point = Kernel.rand(mom.points)+1
      
      dad_point = Kernel.rand(dad.points)+1
      dad_code = dad.program[dad_point].blueprint
      
      baby = mom.replace_point_or_clone(mom_point,dad_code)
      baby_progress = [dad.progress, mom.progress].max + 1

      result << Answer.new(baby, progress:baby_progress)
    end
  end
  
  return result
end