Class: GeneGenie::Combiner::OnePointCombiner

Inherits:
Object
  • Object
show all
Defined in:
lib/gene_genie/combiner/one_point_combiner.rb

Overview

Picks alleles from each Gene randomly

Since:

  • 0.0.1

Instance Method Summary collapse

Instance Method Details

#call(gene_a, gene_b) ⇒ Object

Since:

  • 0.0.1



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# File 'lib/gene_genie/combiner/one_point_combiner.rb', line 5

def call(gene_a, gene_b)
  if rand >= 0.5
    first_gene = gene_a
    second_gene = gene_b
  else
    first_gene = gene_b
    second_gene = gene_a
  end
  first_gene_hashes = first_gene.to_hashes
  second_gene_hashes = second_gene.to_hashes

  total_length = first_gene_hashes.map(&:size).reduce(:+)
  crossover_point = rand(0..(total_length - 1))

  count = 0
  new_information = first_gene_hashes.map.with_index do |part, index|
    new_hash = {}
    part.each do |k, v|
      new_hash[k] = (count >= crossover_point) ? second_gene_hashes[index][k] : v
      count += 1
    end
    new_hash
  end
  Gene.new(information: new_information,
           fitness_evaluator: first_gene.fitness_evaluator,
           gene_combiner: self)
end