Package org.uma.jmetal.operator.crossover.impl

Class ArithmeticCrossover

java.lang.Object

org.uma.jmetal.operator.crossover.impl.ArithmeticCrossover

All Implemented Interfaces:

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

public class ArithmeticCrossover
extends Object
implements CrossoverOperator<DoubleSolution>

This class implements the Arithmetic Crossover operator for real-valued solutions. The arithmetic crossover creates offspring that are a weighted arithmetic mean of the parent solutions. For each variable, a random weight is used to combine the parent values.

Reference: Michalewicz, Z. (1996). Genetic Algorithms + Data Structures = Evolution Programs. Springer-Verlag, Berlin.

Author:

Antonio J. Nebro

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ArithmeticCrossover(double crossoverProbability)	Constructor with default parameters
ArithmeticCrossover(double crossoverProbability, RepairDoubleSolution solutionRepair)	Constructor with repair strategy
ArithmeticCrossover(double crossoverProbability, RepairDoubleSolution solutionRepair, RandomGenerator<Double> randomGenerator)	Constructor with all parameters

Method Summary

Modifier and Type	Method	Description
double	crossoverProbability()
List<DoubleSolution>	execute(List<DoubleSolution> solutions)
int	numberOfGeneratedChildren()
int	numberOfRequiredParents()

Methods inherited from class java.lang.Object

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

Constructor Details

ArithmeticCrossover

public ArithmeticCrossover(double crossoverProbability)

Constructor with default parameters

Parameters:

crossoverProbability - Crossover probability (must be in [0,1])

ArithmeticCrossover

public ArithmeticCrossover(double crossoverProbability,
 RepairDoubleSolution solutionRepair)

Constructor with repair strategy

Parameters:

crossoverProbability - Crossover probability (must be in [0,1])

solutionRepair - Strategy for repairing solutions

ArithmeticCrossover

public ArithmeticCrossover(double crossoverProbability,
 RepairDoubleSolution solutionRepair,
 RandomGenerator<Double> randomGenerator)

Constructor with all parameters

Parameters:

crossoverProbability - Crossover probability (must be in [0,1])

solutionRepair - Strategy for repairing solutions

randomGenerator - Random number generator

Method Details

execute

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

Specified by:

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

Parameters:

solutions - The data to process

crossoverProbability

public double crossoverProbability()

Specified by:

crossoverProbability in interface CrossoverOperator<DoubleSolution>

numberOfRequiredParents

public int numberOfRequiredParents()

Specified by:

numberOfRequiredParents in interface CrossoverOperator<DoubleSolution>

numberOfGeneratedChildren

public int numberOfGeneratedChildren()

Specified by:

numberOfGeneratedChildren in interface CrossoverOperator<DoubleSolution>