org.jgap

Class NaturalSelectorExt

java.lang.Object

org.jgap.NaturalSelector

org.jgap.NaturalSelectorExt

All Implemented Interfaces:

java.io.Serializable, Configurable, INaturalSelector

Direct Known Subclasses:

BestChromosomesSelector, ThresholdSelector, TournamentSelector, WeightedRouletteSelector

public abstract class NaturalSelectorExt
extends NaturalSelector

An extended implementation of NaturalSelector that acts as a base class for the built-in JGAP selectors BestChromosomesSelector and WeightedRouletteSelector.

Since:

3.3.3

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.jgap.NaturalSelector

NaturalSelector.AgeFitnessValueComparator, NaturalSelector.FitnessAgeValueComparator, NaturalSelector.FitnessValueComparator

Constructor Summary

Constructors

Constructor and Description
NaturalSelectorExt() Default constructor, only needed for dynamic instantiation!
NaturalSelectorExt(Configuration a_config)

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object a_o)
boolean	getDoubletteChromosomesAllowed()
void	select(int a_howManyToSelect, Population a_from_pop, Population a_to_pop) Selects a given number of Chromosomes that will move on to the next generation population.
void	setDoubletteChromosomesAllowed(boolean a_doublettesAllowed) Determines whether doublette chromosomes may be added to the selector or will be ignored.

Methods inherited from class org.jgap.NaturalSelector

getConfiguration

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jgap.INaturalSelector

empty, returnsUniqueChromosomes

Constructor Detail

NaturalSelectorExt

public NaturalSelectorExt()
                   throws InvalidConfigurationException

Default constructor, only needed for dynamic instantiation!

Throws:

InvalidConfigurationException

Since:

3.3.3

NaturalSelectorExt

public NaturalSelectorExt(Configuration a_config)
                   throws InvalidConfigurationException

Parameters:

a_config - the configuration to use

Throws:

InvalidConfigurationException

Since:

3.3.3

Method Detail

setDoubletteChromosomesAllowed

public void setDoubletteChromosomesAllowed(boolean a_doublettesAllowed)

Determines whether doublette chromosomes may be added to the selector or will be ignored.

Parameters:

a_doublettesAllowed - true: doublette chromosomes allowed to be added to the selector. false: doublettes will be ignored and not added

Since:

3.3.3

getDoubletteChromosomesAllowed

public boolean getDoubletteChromosomesAllowed()

Returns:

true: doublette chromosomes allowed to be added to the selector false: this is sort of risky and might lead to unexpected population sizes during evolution!

Since:

3.3.3

equals

public boolean equals(java.lang.Object a_o)

Overrides:

equals in class java.lang.Object

Parameters:

a_o - the object to compare

Returns:

true: compared object is seen as equal to current instance

Since:

3.3.3

select

public final void select(int a_howManyToSelect,
                         Population a_from_pop,
                         Population a_to_pop)

Selects a given number of Chromosomes that will move on to the next generation population.

Parameters:

a_from_pop - the population the Chromosomes will be selected from

a_to_pop - the population the Chromosomes will be added to

a_howManyToSelect - the number of Chromosomes to select

Since:

3.3.3