Package org.apache.commons.math3.genetics

Class GeneticAlgorithm

java.lang.Object
org.apache.commons.math3.genetics.GeneticAlgorithm
public class GeneticAlgorithm extends Object
Implementation of a genetic algorithm. All factors that govern the operation of the algorithm can be configured for a specific problem.
Since:
2.0

  • Constructor Details

  • Method Details

    • setRandomGenerator

      public static void setRandomGenerator(RandomGenerator random)
      Set the (static) random generator.
      Parameters:
      random - random generator

    • getRandomGenerator

      public static RandomGenerator getRandomGenerator()
      Returns the (static) random generator.
      Returns:
      the static random generator shared by GA implementation classes

    • evolve

      public Population evolve(Population initial, StoppingCondition condition)
      Evolve the given population. Evolution stops when the stopping condition is satisfied. Updates the generationsEvolved property with the number of generations evolved before the StoppingCondition is satisfied.
      Parameters:
      initial - the initial, seed population.
      condition - the stopping condition used to stop evolution.
      Returns:
      the population that satisfies the stopping condition.

    • nextGeneration

      public Population nextGeneration(Population current)
      Evolve the given population into the next generation.

      1. Get nextGeneration population to fill from current generation, using its nextGeneration method
      2. Loop until new generation is filled:
      3. Return nextGeneration
      Parameters:
      current - the current population.
      Returns:
      the population for the next generation.

    • getCrossoverPolicy

      public CrossoverPolicy getCrossoverPolicy()
      Returns the crossover policy.
      Returns:
      crossover policy

    • getCrossoverRate

      public double getCrossoverRate()
      Returns the crossover rate.
      Returns:
      crossover rate

    • getMutationPolicy

      public MutationPolicy getMutationPolicy()
      Returns the mutation policy.
      Returns:
      mutation policy

    • getMutationRate

      public double getMutationRate()
      Returns the mutation rate.
      Returns:
      mutation rate

    • getSelectionPolicy

      public SelectionPolicy getSelectionPolicy()
      Returns the selection policy.
      Returns:
      selection policy

    • getGenerationsEvolved

      public int getGenerationsEvolved()
      Returns the number of generations evolved to reach StoppingCondition in the last run.
      Returns:
      number of generations evolved
      Since:
      2.1