jenes.stage.operator.common

Class MultiNicheCrowder<T extends Chromosome>

java.lang.Object

jenes.stage.AbstractStage<T>

jenes.stage.operator.Operator<T>

jenes.stage.operator.Crowder<T>

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

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

Implementation of multi-niche crowding.

Since:

2.0

Version:

2.0

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MultiNicheCrowder.CrossoverMethod Provides the available crossover methods
static class	MultiNicheCrowder.MutationMethod Provides standard mutation methods
static class	MultiNicheCrowder.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 Crossover<T>	crossover Crossover operator
protected int	crowdingFactor Crowding factor
static MultiNicheCrowder.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 factor
static double	DEFAULT_MUTATION_PROBABILITY The default mutation probability
static int	DEFAULT_REPLACEMENT_FACTOR The default replacement factor
static int	DEFAULT_SELECTION_FACTOR The default selection factor
static MultiNicheCrowder.SelectionMethod	DEFAULT_SELECTION_METHOD The default selection method
protected int	replacementFactor Replacement factor
protected int	selectionFactor Selection factor
protected Selector<T>	selector Selector operator

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
MultiNicheCrowder() Creates MultiNicheCrowder using default options.
MultiNicheCrowder(MultiNicheCrowder.SelectionMethod selection) Creates a MultiNicheCrowder instance
MultiNicheCrowder(MultiNicheCrowder.SelectionMethod selection, MultiNicheCrowder.CrossoverMethod crossmethod) Creates a MultiNicheCrowder instance
MultiNicheCrowder(MultiNicheCrowder.SelectionMethod selection, MultiNicheCrowder.CrossoverMethod crossmethod, double crossover, double mutation) Creates a MultiNicheCrowder instance
MultiNicheCrowder(MultiNicheCrowder.SelectionMethod selectionmethod, MultiNicheCrowder.CrossoverMethod crossmethod, double crossover, double mutation, int sf, int cf, int rf) Creates a MultiNicheCrowder instance

Method Summary

Methods

Modifier and Type	Method and Description
int	getCrowdingFactor() Returns the crowding factor
int	getReplacementFactor() Returns the replacement factor
int	getSelectionFactor() Return the selection factor
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	setCrowdingFactor(int crowdingFactor) Sets the crowding factor
void	setReplacementFactor(int replacementFactor) Sets the replacement factor
void	setSelectionFactor(int selectionFactor) Sets the replacement factor

Methods inherited from class jenes.stage.operator.Crowder

getBody, init, isElitist, process, setBiggerIsBetter, setElitist, setFitness, 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 MultiNicheCrowder.SelectionMethod DEFAULT_SELECTION_METHOD

The default selection method

DEFAULT_CROSSOVER_METHOD

public static final MultiNicheCrowder.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_SELECTION_FACTOR

public static final int DEFAULT_SELECTION_FACTOR

The default selection factor

See Also:

Constant Field Values

DEFAULT_CROWDING_FACTOR

public static final int DEFAULT_CROWDING_FACTOR

The default crowding factor

See Also:

Constant Field Values

DEFAULT_REPLACEMENT_FACTOR

public static final int DEFAULT_REPLACEMENT_FACTOR

The default replacement factor

See Also:

Constant Field Values

selectionFactor

protected int selectionFactor

Selection factor

crowdingFactor

protected int crowdingFactor

Crowding factor

replacementFactor

protected int replacementFactor

Replacement factor

crossover

protected Crossover<T extends Chromosome> crossover

Crossover operator

selector

protected Selector<T extends Chromosome> selector

Selector operator

Constructor Detail

MultiNicheCrowder

public MultiNicheCrowder()

Creates MultiNicheCrowder using default options.

MultiNicheCrowder

public MultiNicheCrowder(MultiNicheCrowder.SelectionMethod selection)

Creates a MultiNicheCrowder instance

Parameters:

crossmethod - crossover method

MultiNicheCrowder

public MultiNicheCrowder(MultiNicheCrowder.SelectionMethod selection,
                 MultiNicheCrowder.CrossoverMethod crossmethod)

Creates a MultiNicheCrowder instance

Parameters:

crossmethod - crossover method

MultiNicheCrowder

public MultiNicheCrowder(MultiNicheCrowder.SelectionMethod selection,
                 MultiNicheCrowder.CrossoverMethod crossmethod,
                 double crossover,
                 double mutation)

Creates a MultiNicheCrowder instance

Parameters:

crossmethod - crossover method

crossover - crossover probability

mutation - mutation probability

MultiNicheCrowder

public MultiNicheCrowder(MultiNicheCrowder.SelectionMethod selectionmethod,
                 MultiNicheCrowder.CrossoverMethod crossmethod,
                 double crossover,
                 double mutation,
                 int sf,
                 int cf,
                 int rf)

Creates a MultiNicheCrowder instance

Parameters:

crossmethod - crossover method

crossover - crossover probability

mutation - mutation probability

sf - selection factor

cf - crowding factor

rf - replacement factor

Method Detail

getCrowdingFactor

public final int getCrowdingFactor()

Returns the crowding factor

Returns:

setCrowdingFactor

public void setCrowdingFactor(int crowdingFactor)

Sets the crowding factor

Parameters:

crowdingFactor - the factor

getReplacementFactor

public final int getReplacementFactor()

Returns the replacement factor

Returns:

setReplacementFactor

public void setReplacementFactor(int replacementFactor)

Sets the replacement factor

Parameters:

replacementFactor - the factor

getSelectionFactor

public final int getSelectionFactor()

Return the selection factor

Returns:

setSelectionFactor

public void setSelectionFactor(int selectionFactor)

Sets the replacement factor

Parameters:

selectionFactor - the factor

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