org.uma.jmetal.operator.impl.crossover

Class DifferentialEvolutionCrossover

java.lang.Object

org.uma.jmetal.operator.impl.crossover.DifferentialEvolutionCrossover

All Implemented Interfaces:

Serializable, CrossoverOperator<DoubleSolution>, Operator<List<DoubleSolution>,List<DoubleSolution>>

public class DifferentialEvolutionCrossover
extends Object
implements CrossoverOperator<DoubleSolution>

Differential evolution crossover operator

Author:

Antonio J. Nebro Comments: - The operator receives two parameters: the current individual and an array of three parent individuals - The best and rand variants depends on the third parent, according whether it represents the current of the "best" individual or a random one. The implementation of both variants are the same, due to that the parent selection is external to the crossover operator. - Implemented variants: - rand/1/bin (best/1/bin) - rand/1/exp (best/1/exp) - current-to-rand/1 (current-to-best/1) - current-to-rand/1/bin (current-to-best/1/bin) - current-to-rand/1/exp (current-to-best/1/exp)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
DifferentialEvolutionCrossover() Constructor
DifferentialEvolutionCrossover(double cr, double f, double k, String variant) Constructor
DifferentialEvolutionCrossover(double cr, double f, String variant) Constructor
DifferentialEvolutionCrossover(double cr, double f, String variant, BoundedRandomGenerator<Integer> jRandomGenerator, BoundedRandomGenerator<Double> crRandomGenerator) Constructor
DifferentialEvolutionCrossover(double cr, double f, String variant, RandomGenerator<Double> randomGenerator) Constructor

Method Summary

Modifier and Type	Method and Description
List<DoubleSolution>	execute(List<DoubleSolution> parentSolutions) Execute() method
double	getCr()
double	getF()
double	getK()
int	getNumberOfParents() Three parents are required to apply this operator.
String	getVariant()
void	setCr(double cr)
void	setCurrentSolution(DoubleSolution current)
void	setF(double f)
void	setK(double k)

Methods inherited from class java.lang.Object

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

Constructor Detail

DifferentialEvolutionCrossover

public DifferentialEvolutionCrossover()

Constructor

DifferentialEvolutionCrossover

public DifferentialEvolutionCrossover(double cr,
                                      double f,
                                      String variant)

Constructor

Parameters:

cr -

f -

variant -

DifferentialEvolutionCrossover

public DifferentialEvolutionCrossover(double cr,
                                      double f,
                                      String variant,
                                      RandomGenerator<Double> randomGenerator)

Constructor

Parameters:

cr -

f -

variant -

jRandomGenerator -

crRandomGenerator -

DifferentialEvolutionCrossover

public DifferentialEvolutionCrossover(double cr,
                                      double f,
                                      String variant,
                                      BoundedRandomGenerator<Integer> jRandomGenerator,
                                      BoundedRandomGenerator<Double> crRandomGenerator)

Constructor

Parameters:

cr -

f -

variant -

jRandomGenerator -

crRandomGenerator -

DifferentialEvolutionCrossover

public DifferentialEvolutionCrossover(double cr,
                                      double f,
                                      double k,
                                      String variant)

Constructor

Method Detail

getCr

public double getCr()

getF

public double getF()

getK

public double getK()

getVariant

public String getVariant()

setCurrentSolution

public void setCurrentSolution(DoubleSolution current)

setCr

public void setCr(double cr)

setF

public void setF(double f)

setK

public void setK(double k)

execute

public List<DoubleSolution> execute(List<DoubleSolution> parentSolutions)

Execute() method

Specified by:

execute in interface Operator<List<DoubleSolution>,List<DoubleSolution>>

Parameters:

parentSolutions - The data to process

getNumberOfParents

public int getNumberOfParents()

Three parents are required to apply this operator.

Specified by:

getNumberOfParents in interface CrossoverOperator<DoubleSolution>

Returns: