Package org.uma.jmetal.operator.mutation.impl

Class PolynomialMutation

java.lang.Object

org.uma.jmetal.operator.mutation.impl.PolynomialMutation

All Implemented Interfaces:

Serializable, MutationOperator<DoubleSolution>, Operator<DoubleSolution,DoubleSolution>

public class PolynomialMutation
extends Object
implements MutationOperator<DoubleSolution>

This class implements a polynomial mutation operator

The implementation is based on the NSGA-II code available in http://www.iitk.ac.in/kangal/codes.shtml

If the lower and upper bounds of a variable are the same, no mutation is carried out and the bound value is returned.

Author:

Antonio J. Nebro <antonio@lcc.uma.es>, Juan J. Durillo

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
PolynomialMutation()	Constructor
PolynomialMutation(double mutationProbability, double distributionIndex)	Constructor
PolynomialMutation(double mutationProbability, double distributionIndex, RepairDoubleSolution solutionRepair)	Constructor
PolynomialMutation(double mutationProbability, double distributionIndex, RepairDoubleSolution solutionRepair, RandomGenerator<Double> randomGenerator)	Constructor
PolynomialMutation(double mutationProbability, double distributionIndex, RandomGenerator<Double> randomGenerator)	Constructor
PolynomialMutation(DoubleProblem problem, double distributionIndex, RandomGenerator<Double> randomGenerator)	Constructor

Method Summary

Modifier and Type	Method	Description
DoubleSolution	execute(DoubleSolution solution)	Execute() method
double	getDistributionIndex()
double	mutationProbability()
void	setDistributionIndex(double distributionIndex)
void	setMutationProbability(double probability)

Methods inherited from class java.lang.Object

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

Constructor Details

PolynomialMutation

public PolynomialMutation()

Constructor

PolynomialMutation

public PolynomialMutation(DoubleProblem problem,
 double distributionIndex,
 RandomGenerator<Double> randomGenerator)

Constructor

PolynomialMutation

public PolynomialMutation(double mutationProbability,
 double distributionIndex)

Constructor

PolynomialMutation

public PolynomialMutation(double mutationProbability,
 double distributionIndex,
 RandomGenerator<Double> randomGenerator)

Constructor

PolynomialMutation

public PolynomialMutation(double mutationProbability,
 double distributionIndex,
 RepairDoubleSolution solutionRepair)

Constructor

PolynomialMutation

public PolynomialMutation(double mutationProbability,
 double distributionIndex,
 RepairDoubleSolution solutionRepair,
 RandomGenerator<Double> randomGenerator)

Constructor

Method Details

mutationProbability

public double mutationProbability()

Specified by:

mutationProbability in interface MutationOperator<DoubleSolution>

getDistributionIndex

public double getDistributionIndex()

setMutationProbability

public void setMutationProbability(double probability)

setDistributionIndex

public void setDistributionIndex(double distributionIndex)

execute

public DoubleSolution execute(DoubleSolution solution)
                       throws JMetalException

Execute() method

Specified by:

execute in interface MutationOperator<DoubleSolution>

Specified by:

execute in interface Operator<DoubleSolution,DoubleSolution>

Parameters:

solution - The data to process

Throws:

JMetalException