Class ElitisticListPopulation

java.lang.Object
org.apache.commons.math.genetics.ListPopulation
org.apache.commons.math.genetics.ElitisticListPopulation
All Implemented Interfaces:
Iterable<Chromosome>, Population

public class ElitisticListPopulation extends ListPopulation
Population of chromosomes which uses elitism (certain percentace of the best chromosomes is directly copied to the next generation).
Since:
2.0
Version:
$Revision: 990655 $ $Date: 2010-08-29 23:49:40 +0200 (dim. 29 août 2010) $
  • Constructor Details

    • ElitisticListPopulation

      public ElitisticListPopulation(List<Chromosome> chromosomes, int populationLimit, double elitismRate)
      Creates a new ElitisticListPopulation instance.
      Parameters:
      chromosomes - list of chromosomes in the population
      populationLimit - maximal size of the population
      elitismRate - how many best chromosomes will be directly transferred to the next generation [in %]
    • ElitisticListPopulation

      public ElitisticListPopulation(int populationLimit, double elitismRate)
      Creates a new ListPopulation instance and initializes its inner chromosome list.
      Parameters:
      populationLimit - maximal size of the population
      elitismRate - how many best chromosomes will be directly transferred to the next generation [in %]
  • Method Details

    • nextGeneration

      public Population nextGeneration()
      Start the population for the next generation. The elitismRate percents of the best chromosomes are directly copied to the next generation.
      Returns:
      the beginnings of the next generation.
    • setElitismRate

      public void setElitismRate(double elitismRate)
      Sets the elitism rate, i.e. how many best chromosomes will be directly transferred to the next generation [in %].
      Parameters:
      elitismRate - how many best chromosomes will be directly transferred to the next generation [in %]
    • getElitismRate

      public double getElitismRate()
      Access the elitism rate.
      Returns:
      the elitism rate