jenes.stage.operator.common

Class DeJongCrowder<T extends Chromosome>

java.lang.Object

jenes.stage.AbstractStage<T>

jenes.stage.operator.Operator<T>

jenes.stage.operator.Crowder<T>

jenes.stage.operator.common.DeJongCrowder<T>

public class DeJongCrowder<T extends Chromosome>
extends Crowder<T>

This class implements De Jong crowding.

Since:

2.0

Version:

2.0

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DeJongCrowder.CrossoverMethod Provides the available crossover methods
static class	DeJongCrowder.MutationMethod Provides standard mutation methods
static class	DeJongCrowder.SelectionMethod Provides the available selection methods

Nested classes/interfaces inherited from class jenes.stage.operator.Operator

Operator.Statistics

Field Summary

Fields

Modifier and Type	Field and Description
protected int	crowdingFactor The crowding factor
static DeJongCrowder.CrossoverMethod	DEFAULT_CROSSOVER_METHOD The default crossover method
static double	DEFAULT_CROSSOVER_PROBABILITY The default crossover probability
static int	DEFAULT_CROWDING_FACTOR The default crowding selectionRate
static double	DEFAULT_MUTATION_PROBABILITY The default mutation probability
static DeJongCrowder.SelectionMethod	DEFAULT_SELECTION_METHOD The default selection method
protected Selector<T>	selector The selctor used

Fields inherited from class jenes.stage.operator.Crowder

body, elitist

Fields inherited from class jenes.stage.operator.Operator

random, statistics

Fields inherited from class jenes.stage.AbstractStage

biggerIsBetter, fitness, ga

Constructor Summary

Constructors

Constructor and Description
DeJongCrowder(int sr, int cf) Creates DeJongCrowder
DeJongCrowder(int sr, int cf, DeJongCrowder.SelectionMethod selmethod) Creates DeJongCrowder
DeJongCrowder(int sr, int cf, DeJongCrowder.SelectionMethod selmethod, DeJongCrowder.CrossoverMethod crossmethod) Creates DeJongCrowder
DeJongCrowder(int sr, int cf, DeJongCrowder.SelectionMethod selmethod, DeJongCrowder.CrossoverMethod crossmethod, double crossover, double mutation) Creates DeJongCrowder
DeJongCrowder(int sr, int cf, Selector<T> selector, AbstractStage<T>... stages) Creates DeJongCrowder

Method Summary

Methods

Modifier and Type	Method and Description
int	getCrowdingFactor() Returns the crowding factor
int	getSelectionRate() Returns the selection rate
Selector<T>	getSelector() Returns the selector
protected void	preselect(Population<T> in, Population<T> out) Preselection of individuals before processing.
protected void	replace(Population<T> initial, Population<T> preselected, Population<T> evolved, Population<T> out) Implements the replacement policy.
void	setBiggerIsBetter(boolean flag, boolean recursively) Deprecated.
void	setCrowdingFactor(int cf) Sets the crouding factor
void	setFitness(Fitness fit, boolean recursively) XXX
void	setSelectionRate(int sr) Sets the selection rate
void	setSelector(Selector<T> selector) Sets the selector

Methods inherited from class jenes.stage.operator.Crowder

getBody, init, isElitist, process, setElitist, similarity

Methods inherited from class jenes.stage.operator.Operator

getStatistics, updateStatistics

Methods inherited from class jenes.stage.AbstractStage

dispose, getFitness, isBiggerBetter, isFitnessChanged, setBiggerIsBetter, setFitness

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_SELECTION_METHOD

public static final DeJongCrowder.SelectionMethod DEFAULT_SELECTION_METHOD

The default selection method

DEFAULT_CROSSOVER_METHOD

public static final DeJongCrowder.CrossoverMethod DEFAULT_CROSSOVER_METHOD

The default crossover method

DEFAULT_CROSSOVER_PROBABILITY

public static final double DEFAULT_CROSSOVER_PROBABILITY

The default crossover probability

See Also:

Constant Field Values

DEFAULT_MUTATION_PROBABILITY

public static final double DEFAULT_MUTATION_PROBABILITY

The default mutation probability

See Also:

Constant Field Values

DEFAULT_CROWDING_FACTOR

public static final int DEFAULT_CROWDING_FACTOR

The default crowding selectionRate

See Also:

Constant Field Values

selector

protected Selector<T extends Chromosome> selector

The selctor used

crowdingFactor

protected int crowdingFactor

The crowding factor

Constructor Detail

DeJongCrowder

public DeJongCrowder(int sr,
             int cf)

Creates DeJongCrowder

Parameters:

sr - selection rate

cf - crowding rate

DeJongCrowder

public DeJongCrowder(int sr,
             int cf,
             DeJongCrowder.SelectionMethod selmethod)

Creates DeJongCrowder

Parameters:

sr - selection rate

cf - crowding rate

selmethod - selection method

DeJongCrowder

public DeJongCrowder(int sr,
             int cf,
             DeJongCrowder.SelectionMethod selmethod,
             DeJongCrowder.CrossoverMethod crossmethod)

Creates DeJongCrowder

Parameters:

sr - selection rate

cf - crowding rate

selmethod - selection method

crossmethod - crossover method

crossover - crossover probability

DeJongCrowder

public DeJongCrowder(int sr,
             int cf,
             DeJongCrowder.SelectionMethod selmethod,
             DeJongCrowder.CrossoverMethod crossmethod,
             double crossover,
             double mutation)

Creates DeJongCrowder

Parameters:

sr - selection rate

cf - crowding rate

selmethod - selection method

crossmethod - crossover method

crossover - crossover probability

mutation - mutation probability

DeJongCrowder

public DeJongCrowder(int sr,
             int cf,
             Selector<T> selector,
             AbstractStage<T>... stages)

Creates DeJongCrowder

Parameters:

sr - selection rate

cf - crowding rate

selector - selector

stages - the body stages

Method Detail

getCrowdingFactor

public final int getCrowdingFactor()

Returns the crowding factor

Returns:

setCrowdingFactor

public void setCrowdingFactor(int cf)

Sets the crouding factor

Parameters:

cf - crowding factor

getSelectionRate

public final int getSelectionRate()

Returns the selection rate

Returns:

setSelectionRate

public void setSelectionRate(int sr)

Sets the selection rate

Parameters:

sr -

getSelector

public final Selector<T> getSelector()

Returns the selector

Returns:

setSelector

public void setSelector(Selector<T> selector)

Sets the selector

Parameters:

selector -

preselect

protected void preselect(Population<T> in,
             Population<T> out)

Description copied from class: Crowder

Preselection of individuals before processing.

Specified by:

preselect in class Crowder<T extends Chromosome>

Parameters:

in - input population

out - output population

replace

protected void replace(Population<T> initial,
           Population<T> preselected,
           Population<T> evolved,
           Population<T> out)

Description copied from class: Crowder

Implements the replacement policy.

Specified by:

replace in class Crowder<T extends Chromosome>

Parameters:

initial - - the initial population

preselected - - the population resulting from preselection

evolved - - the part of population that has evolved

out - - the output population

setBiggerIsBetter

@Deprecated
public void setBiggerIsBetter(boolean flag,
                                boolean recursively)

Deprecated.

Overrides:

setBiggerIsBetter in class Crowder<T extends Chromosome>

Parameters:

flag - true, if the best individual has the higher fitness

recursively - true, to propagate this setting down, otherwise false.

setFitness

public void setFitness(Fitness fit,
              boolean recursively)

XXX

Overrides:

setFitness in class Crowder<T extends Chromosome>

Parameters:

fit -

recursively -