gov.sandia.cognition.learning.algorithm.genetic.reproducer

Class VectorizableCrossoverFunction

java.lang.Object

gov.sandia.cognition.util.AbstractCloneableSerializable

gov.sandia.cognition.util.AbstractRandomized

gov.sandia.cognition.learning.algorithm.genetic.reproducer.VectorizableCrossoverFunction

All Implemented Interfaces:

CrossoverFunction<Vectorizable>, CloneableSerializable, Randomized, java.io.Serializable, java.lang.Cloneable

@CodeReview(reviewer="Kevin R. Dixon",date="2008-07-23",changesNeeded=false,comments={"Now extends AbstractRandomized.","Moved previous code review as CodeReview annotation","Looks fine."}) @CodeReview(reviewer="Justin Basilico",date="2006-10-04",changesNeeded=false,comments={"Restructured the code to get rid of some extra copying.","Added the Random object as part of the constructor instead of creating it each time inside the reproduction loop."})
public class VectorizableCrossoverFunction
extends AbstractRandomized
implements CrossoverFunction<Vectorizable>

The VectorizableCrossoverFunction class is a CrossoverFunction that takes two Vectorizable.

Since:

1.0

Author:

Justin Basilico, Kevin Dixon, Jonathan McClain

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static double	DEFAULT_PROBABILITY Default probability of cross over, 0.5.

Fields inherited from class gov.sandia.cognition.util.AbstractRandomized

random

Constructor Summary

Constructors

Constructor and Description
VectorizableCrossoverFunction() Creates a new instance of VectorizableCrossoverFunction with an crossover probability of 0.5.
VectorizableCrossoverFunction(double probabilityCrossover) Creates a new instance of VectorizableCrossoverFunction.
VectorizableCrossoverFunction(double probabilityCrossover, java.util.Random random) Creates a new instance of VectorizableCrossoverFunction.

Method Summary

Modifier and Type	Method and Description
Vectorizable	crossover(Vectorizable parent1, Vectorizable parent2) Crosses over each element of the parent vectors.
double	getProbabilityCrossover() Getter for probabilityCrossover.
void	setProbabilityCrossover(double probabilityCrossover) Setter for probabilityCrossover.

Methods inherited from class gov.sandia.cognition.util.AbstractRandomized

clone, getRandom, setRandom

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_PROBABILITY

public static final double DEFAULT_PROBABILITY

Default probability of cross over, 0.5.

See Also:

Constant Field Values

Constructor Detail

VectorizableCrossoverFunction

public VectorizableCrossoverFunction()

Creates a new instance of VectorizableCrossoverFunction with an crossover probability of 0.5.

VectorizableCrossoverFunction

public VectorizableCrossoverFunction(double probabilityCrossover)

Creates a new instance of VectorizableCrossoverFunction.

Parameters:

probabilityCrossover - Probability that an element in the child will come from vector2

VectorizableCrossoverFunction

public VectorizableCrossoverFunction(double probabilityCrossover,
                                     java.util.Random random)

Creates a new instance of VectorizableCrossoverFunction.

Parameters:

probabilityCrossover - Probability that an element in the child will come from vector2

random - The random number generator to use.

Method Detail

crossover

public Vectorizable crossover(Vectorizable parent1,
                              Vectorizable parent2)

Crosses over each element of the parent vectors. Uses a random boolean to decide which parent contributes an element to the child.

Specified by:

crossover in interface CrossoverFunction<Vectorizable>

Parameters:

parent1 - The first parent to crossover.

parent2 - The second parent to crossover.

Returns:

The result of the crossover.

getProbabilityCrossover

public double getProbabilityCrossover()

Getter for probabilityCrossover.

Returns:

Probability that an element in the child will come from vector2

setProbabilityCrossover

public void setProbabilityCrossover(double probabilityCrossover)

Setter for probabilityCrossover.

Parameters:

probabilityCrossover - Probability that an element in the child will come from vector2