Class: Operator::Selector::TournamentSelection

Inherits:
Object
  • Object
show all
Defined in:
lib/opt_alg_framework/operator/selector/tournament_selection.rb

Instance Method Summary collapse

Constructor Details

#initialize(size) ⇒ TournamentSelection

Initialize informing the tournament size.



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# File 'lib/opt_alg_framework/operator/selector/tournament_selection.rb', line 6

def initialize(size)
  @size = size
end

Instance Method Details

#select(population) ⇒ Object

Main method.



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# File 'lib/opt_alg_framework/operator/selector/tournament_selection.rb', line 11

def select(population)
  best_individual = population[Random.rand(0...population.size)]
  0.upto(@size) do
    individual = population[Random.rand(0...population.size)]
    best_individual = individual if individual[:fitness] < best_individual[:fitness]
  end
  best_individual
end