net.sourceforge.cilib.pso.moo.guideselectionstrategies
Class VEPSOGuideSelectionStrategy

java.lang.Object
  net.sourceforge.cilib.pso.moo.guideselectionstrategies.VEPSOGuideSelectionStrategy

All Implemented Interfaces:

Serializable, GuideSelectionStrategy, Cloneable

public class VEPSOGuideSelectionStrategy
extends Object
implements GuideSelectionStrategy

Vector-Evaluated Particle Swarm Optimisation Guide Selection Strategy

This GuideSelectionStrategy implements the basic behaviour of VEPSO where each particle's global guide is selected as the position of a particle within another swarm (see MultiPopulationCriterionBasedAlgorithm). Each swarm is evaluated according to a different sub-objective (see CriterionBasedMOProblemAdapter) of a Multi-objective optimisation problem. A KnowledgeTransferStrategy is used to determine which swarm is selected (either random or ring-based) as well as which particle's position within this swarm will be used as guide (usually the gBest particle).

References:

• K. E. Parsopoulos, D. K. Tasoulis and M. N. Vrahatis, "Multiobjective Optimization using Parallel Vector Evaluated Particle Swarm Optimization", in Proceedings of the IASTED International Conference on Artificial Intelligence and Applications, vol 2, pp. 823-828, 2004.

Author:

Wiehann Matthysen

See Also:

Serialized Form

Constructor Summary

VEPSOGuideSelectionStrategy()

VEPSOGuideSelectionStrategy(VEPSOGuideSelectionStrategy copy)

Method Summary

VEPSOGuideSelectionStrategy	getClone() Create a cloned copy of the current object and return it.
KnowledgeTransferStrategy	getKnowledgeTransferStrategy()
Vector	selectGuide(Particle particle) Selects a guide for particle.
void	setKnowledgeTransferStrategy(KnowledgeTransferStrategy knowledgeTransferStrategy)

Methods inherited from class java.lang.Object

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

Constructor Detail

VEPSOGuideSelectionStrategy

public VEPSOGuideSelectionStrategy()

VEPSOGuideSelectionStrategy

public VEPSOGuideSelectionStrategy(VEPSOGuideSelectionStrategy copy)

Method Detail

getClone

public VEPSOGuideSelectionStrategy getClone()

Description copied from interface: Cloneable

Create a cloned copy of the current object and return it. In general the created copy will be a deep copy of the provided instance. As a result this operation an be quite expensive if used incorrectly.

Specified by:

getClone in interface GuideSelectionStrategy

Specified by:

getClone in interface Cloneable

Returns:

An exact clone of the current object instance.

See Also:

Object.clone()

setKnowledgeTransferStrategy

public void setKnowledgeTransferStrategy(KnowledgeTransferStrategy knowledgeTransferStrategy)

getKnowledgeTransferStrategy

public KnowledgeTransferStrategy getKnowledgeTransferStrategy()

selectGuide

public Vector selectGuide(Particle particle)

Description copied from interface: GuideSelectionStrategy

Selects a guide for particle.

Specified by:

selectGuide in interface GuideSelectionStrategy

Parameters:

particle - The particle who's guide will be selected.

Returns:

The selected guide.