Operator.Operations
Class TournamentSelect

java.lang.Object
  Operator.Operations.SelectionOperation
      Operator.Operations.TournamentSelect

All Implemented Interfaces:

Operation, ParameterI, Stochastic

public class TournamentSelect
extends SelectionOperation
implements 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.

Field Summary

protected double	pressureModifier
protected RandomNumberGenerator	rng
protected java.util.ArrayList<Fitness>	tour
protected int	tournamentSize

Fields inherited from class Operator.Operations.SelectionOperation

selectedPopulation, size

Constructor Summary

TournamentSelect()
New instantion

TournamentSelect(int size, int tourSize, RandomNumberGenerator rand)
Creates a new instance of TournamentSelect

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

Method Summary

void	doOperation(Individual operand) Performs the operation on an operand
void	doOperation(java.util.List<Individual> operands) Individuals from operands will be added to the selected population if the win their tournament.
RandomNumberGenerator	getRNG() Get the number generator
void	getTour(java.util.List<Individual> operands) Adds individual to the tournament by randomly selecting from the operands untill the tounramentSize is reached.
void	selectFromTour() Select a winner from the tournament and add to the selected population.
void	setProperties(java.util.Properties p) Set properties
void	setRNG(RandomNumberGenerator m) Set the number generator

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 RandomNumberGenerator rng

tournamentSize

protected int tournamentSize

pressureModifier

protected double pressureModifier

tour

protected java.util.ArrayList<Fitness> tour

Constructor Detail

TournamentSelect

public TournamentSelect(int size,
                        int tourSize,
                        RandomNumberGenerator rand)

Creates a new instance of TournamentSelect

Parameters:

size - size of selected population

tourSize - size of tournament

rand - random number generator

TournamentSelect

public TournamentSelect(RandomNumberGenerator rand,
                        java.util.Properties p)

Creates a new instance of TournamentSelect

Parameters:

rand - random number generator

p - properties

TournamentSelect

public TournamentSelect()

New instantion

Method Detail

setProperties

public void setProperties(java.util.Properties p)

Description copied from class: SelectionOperation

Set properties

Specified by:

setProperties in interface ParameterI

Overrides:

setProperties in class SelectionOperation

Parameters:

p - object containing properties

doOperation

public void doOperation(Individual operand)

Description copied from interface: Operation

Performs the operation on an operand

Specified by:

doOperation in interface Operation

Specified by:

doOperation in class SelectionOperation

Parameters:

operand - operand to perform operation on

doOperation

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

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

Specified by:

doOperation in interface Operation

Specified by:

doOperation in class SelectionOperation

Parameters:

operands - Individuals to be selected from

getTour

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

Adds individual to the tournament by randomly selecting from the operands untill the tounramentSize 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(RandomNumberGenerator m)

Description copied from interface: Stochastic

Set the number generator

Specified by:

setRNG in interface Stochastic

Parameters:

m - number generator

getRNG

public RandomNumberGenerator getRNG()

Description copied from interface: Stochastic

Get the number generator

Specified by:

getRNG in interface Stochastic

Returns:

number generator