evSOLve.JEvolution.selection

Class TournamentSelection

java.lang.Object

evSOLve.JEvolution.selection.TournamentSelection

All Implemented Interfaces:

Selection

public class TournamentSelection
extends java.lang.Object
implements Selection

Constructor Summary

Constructors

Constructor and Description
TournamentSelection() Default constructor for binary tournament selection.
TournamentSelection(int tournamentSize) Constructor for tournament selection with a given tournament size.

Method Summary

Methods

Modifier and Type	Method and Description
void	doSelect(SubPopulation parents, SubPopulation offspring) JEvolution native and default (binary tournaments) selection method.
int	getTournamentSize() Gives the tournament size tournament size.
void	setTournamentSize(int tournamentSize) Sets tournament size.

Methods inherited from class java.lang.Object

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

Constructor Detail

TournamentSelection

public TournamentSelection()

Default constructor for binary tournament selection.

TournamentSelection

public TournamentSelection(int tournamentSize)

Constructor for tournament selection with a given tournament size.

Parameters:

tournamentSize - number of Individuals in a single tournament

Method Detail

getTournamentSize

public int getTournamentSize()

Gives the tournament size tournament size.

Returns:

tournamentSize number of Individuals in a single tournament

setTournamentSize

public void setTournamentSize(int tournamentSize)
                       throws JEvolutionException

Sets tournament size.

Parameters:

tournamentSize - number of Individuals in a single tournament

Throws:

JEvolutionException - if size < 2

doSelect

public void doSelect(SubPopulation parents,
            SubPopulation offspring)

JEvolution native and default (binary tournaments) selection method. Works for arbitrary tournament and population sizes.

Specified by:

doSelect in interface Selection

Parameters:

parents - the SubPopulation under pressure

offspring - the SubPopulation of survivors