jeco.kernel.algorithm.moge
Class TournamentSelectMO

java.lang.Object
  Operator.Operations.SelectionOperation
      jeco.kernel.algorithm.moge.TournamentSelectMO

All Implemented Interfaces:

Operator.Operations.Operation, Parameter.ParameterI, Util.Random.Stochastic

public class TournamentSelectMO
extends Operator.Operations.SelectionOperation
implements Util.Random.Stochastic

The operation of this class is tournament selection. The individual with the best fitness from a randomly selected tournament of size tournamentSize is cloned to the selected population.

Author:

J. M. Colmenar

Field Summary

protected double	pressureModifier
protected Util.Random.RandomNumberGenerator	rng
protected java.util.List<Individuals.Individual>	tour
protected int	tournamentSize

Fields inherited from class Operator.Operations.SelectionOperation

selectedPopulation, size

Constructor Summary

TournamentSelectMO()
New instantion

TournamentSelectMO(Util.Random.RandomNumberGenerator rand, java.util.Properties p)
Creates a new instance of TournamentSelect

Method Summary

void	doOperation(Individuals.Individual indvdl)
void	doOperation(java.util.List<Individuals.Individual> operands) Individuals from operands will be added to the selected population if they win their tournament.
Util.Random.RandomNumberGenerator	getRNG()
void	getTour(java.util.List<Individuals.Individual> operands) Adds individual to the tournament by randomly selecting from the operands untill the touramentSize is reached.
void	selectFromTour() Select a winner from the tournament and add to the selected population.
void	setProperties(java.util.Properties p)
void	setRNG(Util.Random.RandomNumberGenerator m)

Methods inherited from class Operator.Operations.SelectionOperation

getSelectedPopulation, getSize

Methods inherited from class java.lang.Object

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

Field Detail

rng

protected Util.Random.RandomNumberGenerator rng

tournamentSize

protected int tournamentSize

pressureModifier

protected double pressureModifier

tour

protected java.util.List<Individuals.Individual> tour

Constructor Detail

TournamentSelectMO

public TournamentSelectMO(Util.Random.RandomNumberGenerator rand,
                          java.util.Properties p)

Creates a new instance of TournamentSelect

Parameters:

rand - random number generator

p - properties (including tournament size)

TournamentSelectMO

public TournamentSelectMO()

New instantion

Method Detail

setProperties

public final void setProperties(java.util.Properties p)

Specified by:

setProperties in interface Parameter.ParameterI

Overrides:

setProperties in class Operator.Operations.SelectionOperation

doOperation

public void doOperation(java.util.List<Individuals.Individual> operands)

Individuals from operands will be added to the selected population if they win their tournament.

Specified by:

doOperation in interface Operator.Operations.Operation

Specified by:

doOperation in class Operator.Operations.SelectionOperation

Parameters:

operands - Individuals to be selected from

getTour

public void getTour(java.util.List<Individuals.Individual> operands)

Adds individual to the tournament by randomly selecting from the operands untill the touramentSize is reached.

Parameters:

operands - Individuals that can be selected to the tournament

selectFromTour

public void selectFromTour()

Select a winner from the tournament and add to the selected population.

setRNG

public void setRNG(Util.Random.RandomNumberGenerator m)

Specified by:

setRNG in interface Util.Random.Stochastic

getRNG

public Util.Random.RandomNumberGenerator getRNG()

Specified by:

getRNG in interface Util.Random.Stochastic

doOperation

public void doOperation(Individuals.Individual indvdl)

Specified by:

doOperation in interface Operator.Operations.Operation

Specified by:

doOperation in class Operator.Operations.SelectionOperation