org.vizzini.ai.geneticprogramming
Class AbstractChromosomeGP

java.lang.Object
  org.vizzini.ai.geneticalgorithm.AbstractChromosome
      org.vizzini.ai.geneticprogramming.AbstractChromosomeGP

All Implemented Interfaces:

Cloneable, Comparable, IChromosome, IChromosomeGP

Direct Known Subclasses:

DefaultChromosomeGP

public abstract class AbstractChromosomeGP
extends AbstractChromosome
implements IChromosomeGP

Provides base functionality for a chromosome in genetic programming.

Since:

v0.3

Version:

v0.3

Author:

Jeffrey M. Thompson

Field Summary

Fields inherited from interface org.vizzini.ai.geneticalgorithm.IChromosome

UNKNOWN_FITNESS

Constructor Summary

AbstractChromosomeGP()
Construct this object.

AbstractChromosomeGP(IFunction function)
Construct this object with the given parameter.

Method Summary

Object	clone() Return a clone of this instance.
Object	evaluate(IContext context) Evaluate this function.
IFunction	getFunction()
void	mix(IChromosome c1, IChromosome c2, boolean[] mask) Mix the genes of the given chromosomes into this using the given mask.
void	mutate(double mutationRate, double mutationMagnitude) Mutate this chromosome's genes using the given parameters.
void	randomlyInitialize() Initialize the genes with random values.
void	setFunction(IFunction function)
int	size() Return the number of genes.
void	splice(IChromosomeGP chromosome0, IChromosomeGP chromosome1, int cut0, int cut1) Splice the given chromosomes into this using the given cut index.
void	splice(IChromosome c1, IChromosome c2, int cut) Splice the given chromosomes into this using the given cut index.
String	toString() Return a string representation of this object.

Methods inherited from class org.vizzini.ai.geneticalgorithm.AbstractChromosome

addFitness, compareTo, copy, equals, getDescription, getFitness, hashCode, isFitnessUnknown, mix, setDescription, setFitness, setFitnessUnknown

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.vizzini.ai.geneticalgorithm.IChromosome

addFitness, copy, equals, getDescription, getFitness, isFitnessUnknown, mix, setDescription, setFitness, setFitnessUnknown

Methods inherited from interface java.lang.Comparable

compareTo

Constructor Detail

AbstractChromosomeGP

public AbstractChromosomeGP()

Construct this object.

Since:

v0.3

AbstractChromosomeGP

public AbstractChromosomeGP(IFunction function)

Construct this object with the given parameter.

Parameters:

function - Function.

Since:

v0.3

Method Detail

clone

public Object clone()

Return a clone of this instance.

Specified by:

clone in interface IChromosome

Overrides:

clone in class AbstractChromosome

Since:

v0.3

evaluate

public Object evaluate(IContext context)

Evaluate this function.

Specified by:

evaluate in interface IChromosomeGP

Parameters:

context - Context in which to evaluate.

Since:

v0.3

getFunction

public IFunction getFunction()

Specified by:

getFunction in interface IChromosomeGP

Returns:

Return function.

Since:

v0.3

mix

public void mix(IChromosome c1,
                IChromosome c2,
                boolean[] mask)

Mix the genes of the given chromosomes into this using the given mask.

Specified by:

mix in interface IChromosome

Since:

v0.3

mutate

public void mutate(double mutationRate,
                   double mutationMagnitude)

Mutate this chromosome's genes using the given parameters.

Specified by:

mutate in interface IChromosome

Parameters:

mutationRate - Probability of a gene being mutated.

mutationMagnitude - The maximum allowed magnitude of the mutation.

Since:

v0.3

randomlyInitialize

public void randomlyInitialize()

Initialize the genes with random values. In genetic programming, a chromosome's function is created by a IFunctionGenerator, so this method does nothing.

Specified by:

randomlyInitialize in interface IChromosome

Since:

v0.3

setFunction

public void setFunction(IFunction function)

Specified by:

setFunction in interface IChromosomeGP

Parameters:

function - the function to set

Since:

v0.3

size

public int size()

Return the number of genes.

Specified by:

size in interface IChromosome

Since:

v0.3

splice

public void splice(IChromosome c1,
                   IChromosome c2,
                   int cut)

Splice the given chromosomes into this using the given cut index.

Specified by:

splice in interface IChromosome

Since:

v0.3

splice

public void splice(IChromosomeGP chromosome0,
                   IChromosomeGP chromosome1,
                   int cut0,
                   int cut1)

Splice the given chromosomes into this using the given cut index.

Specified by:

splice in interface IChromosomeGP

Since:

v0.3

toString

public String toString()

Return a string representation of this object.

Overrides:

toString in class AbstractChromosome

Since:

v0.3