Class: EvoSynth::Selections::FitnessProportionalSelection

Inherits:
Object
  • Object
show all
Defined in:
lib/evosynth/operators/selections/fitness_proportional_selection.rb

Overview

FITNESSPROPORTIONALE-SELETION (Weicker Page 71)

Direct Known Subclasses

RouletteWheelSelection

Instance Method Summary collapse

Instance Method Details

#select(population, select_count = 1) ⇒ Object 



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# File 'lib/evosynth/operators/selections/fitness_proportional_selection.rb', line 33

def select(population, select_count = 1)
  selected_population = EvoSynth::Population.new
  fitness_hash = generate_fitness_hash(population)

  select_count.to_i.times do
    limit = EvoSynth.rand(fitness_hash.values.max).floor
    next_individual = select_next_individual(population, limit, fitness_hash)
    selected_population.add(next_individual)
  end

  selected_population
end

#to_s ⇒ Object 



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# File 'lib/evosynth/operators/selections/fitness_proportional_selection.rb', line 46

def to_s
  "fitness proportional selection"
end