Package org.opt4j.optimizer.ea

Class MatingCrossoverMutate

java.lang.Object

org.opt4j.optimizer.ea.MatingCrossoverMutate

All Implemented Interfaces:

Mating

public class MatingCrossoverMutate
extends Object
implements Mating

The MatingCrossoverMutate creates offspring from a given set of parents by using Crossover and Mutate.

Field Summary

Fields

Modifier and Type	Field	Description
protected Copy<Genotype>	copy
protected Coupler	coupler
protected Crossover<Genotype>	crossover
protected CrossoverRate	crossoverRate
protected IndividualFactory	individualFactory
protected Mutate<Genotype>	mutate
protected MutationRate	mutationRate
protected Random	random

Constructor Summary

Constructors

Constructor	Description
MatingCrossoverMutate(Crossover<Genotype> crossover, Mutate<Genotype> mutate, Copy<Genotype> copy, Coupler coupler, CrossoverRate crossoverRate, MutationRate mutationRate, Rand random, IndividualFactory individualFactory)	Constructs a MatingCrossoverMutate with a given Crossover , Mutate, Copy, Coupler, CrossoverRate, Rand, and IndividualFactory.

Method Summary

Modifier and Type	Method	Description
Collection<Individual>	getOffspring(int size, Collection<Individual> parents)	Creates offspring from a given set of parents.
Collection<Individual>	getOffspring(int size, Individual... parents)	Creates offspring from a given set of parents.
protected Collection<Individual>	getOffspringInternal(int size, Collection<Individual> parents)	Creates offspring from a given set of parents.
protected Pair<Individual>	mate(Individual parent1, Individual parent2, boolean doCrossover)	Performs the actual Coupler process of two parents.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

crossover

protected final Crossover<Genotype> crossover

mutate

protected final Mutate<Genotype> mutate

copy

protected final Copy<Genotype> copy

coupler

protected final Coupler coupler

crossoverRate

protected final CrossoverRate crossoverRate

mutationRate

protected final MutationRate mutationRate

random

protected final Random random

individualFactory

protected final IndividualFactory individualFactory

Constructor Detail

MatingCrossoverMutate

@Inject
public MatingCrossoverMutate(Crossover<Genotype> crossover,
                             Mutate<Genotype> mutate,
                             Copy<Genotype> copy,
                             Coupler coupler,
                             CrossoverRate crossoverRate,
                             MutationRate mutationRate,
                             Rand random,
                             IndividualFactory individualFactory)

Constructs a MatingCrossoverMutate with a given Crossover , Mutate, Copy, Coupler, CrossoverRate, Rand, and IndividualFactory.

Parameters:

crossover - the crossover operator

mutate - the mutate operator

copy - the copy operator

coupler - the coupler

crossoverRate - the used crossover rate

mutationRate - the mutation rate

random - the random number generator

individualFactory - the individual factory

Method Detail

getOffspring

public Collection<Individual> getOffspring(int size,
                                           Individual... parents)

Description copied from interface: Mating

Creates offspring from a given set of parents.

Specified by:

getOffspring in interface Mating

Parameters:

size - the number of individuals to create

parents - the parents

Returns:

the offspring

getOffspring

public Collection<Individual> getOffspring(int size,
                                           Collection<Individual> parents)

Description copied from interface: Mating

Creates offspring from a given set of parents.

Specified by:

getOffspring in interface Mating

Parameters:

size - the number of individuals to create

parents - the parents

Returns:

the offspring

getOffspringInternal

protected Collection<Individual> getOffspringInternal(int size,
                                                      Collection<Individual> parents)

Creates offspring from a given set of parents. The Coupler is used to create pairs of parents, which are mated using the Mutate and, depending on the CrossoverRate, the Crossover operator.

Parameters:

size - the number of individuals to create

parents - the parents

Returns:

the offspring

mate

protected Pair<Individual> mate(Individual parent1,
                                Individual parent2,
                                boolean doCrossover)

Performs the actual Coupler process of two parents.

Parameters:

parent1 - parent one

parent2 - parent two

doCrossover - indicates whether the coupler shall take place

Returns:

the two offspring individuals