net.sourceforge.cilib.pso.velocityupdatestrategies
Class MOVelocityUpdateStrategy

java.lang.Object
  net.sourceforge.cilib.pso.velocityupdatestrategies.StandardVelocityUpdate
      net.sourceforge.cilib.pso.velocityupdatestrategies.MOVelocityUpdateStrategy

All Implemented Interfaces:

Serializable, VelocityUpdateStrategy, Cloneable

public class MOVelocityUpdateStrategy
extends StandardVelocityUpdate

With Multi-objective PSOs the pBest and lBest (or gBest) particles are replaced with the concept of local and global guides respectively. This class is a generic VelocityUpdateStrategy implementation for most Multi-objective PSOs. It makes use of two GuideSelectionStrategy instances that is responsible for selecting these guides for every particle. After the guides have been selected, different criteria can be used to determine if the particle's guides should be updated. This is achieved by making use of two GuideUpdateStrategy instances.

Author:

Wiehann Matthysen

See Also:

Serialized Form

Field Summary

Fields inherited from class net.sourceforge.cilib.pso.velocityupdatestrategies.StandardVelocityUpdate

cognitiveAcceleration, inertiaWeight, socialAcceleration, vMax

Constructor Summary

MOVelocityUpdateStrategy()

MOVelocityUpdateStrategy(MOVelocityUpdateStrategy copy)

Method Summary

MOVelocityUpdateStrategy	getClone() Clone the VelocityUpdateStrategy object.
GuideSelectionStrategy	getGlobalGuideSelectionStrategy()
GuideUpdateStrategy	getGlobalGuideUpdateStrategy()
GuideSelectionStrategy	getLocalGuideSelectionStrategy()
GuideUpdateStrategy	getLocalGuideUpdateStrategy()
protected void	selectGuides(Particle particle)
void	setGlobalGuideSelectionStrategy(GuideSelectionStrategy globalGuideSelectionStrategy)
void	setGlobalGuideUpdateStrategy(GuideUpdateStrategy globalGuideUpdateStrategy)
void	setLocalGuideSelectionStrategy(GuideSelectionStrategy localGuideSelectionStrategy)
void	setLocalGuideUpdateStrategy(GuideUpdateStrategy localGuideUpdateStrategy)
void	updateVelocity(Particle particle) Perform the velocity update for the given Particle.

Methods inherited from class net.sourceforge.cilib.pso.velocityupdatestrategies.StandardVelocityUpdate

clamp, getCognitiveAcceleration, getInertiaWeight, getSocialAcceleration, getVMax, setCognitiveAcceleration, setInertiaWeight, setSocialAcceleration, setVMax, updateControlParameters

Methods inherited from class java.lang.Object

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

Constructor Detail

MOVelocityUpdateStrategy

public MOVelocityUpdateStrategy()

MOVelocityUpdateStrategy

public MOVelocityUpdateStrategy(MOVelocityUpdateStrategy copy)

Method Detail

getClone

public MOVelocityUpdateStrategy getClone()

Description copied from class: StandardVelocityUpdate

Clone the VelocityUpdateStrategy object.

Specified by:

getClone in interface VelocityUpdateStrategy

Specified by:

getClone in interface Cloneable

Overrides:

getClone in class StandardVelocityUpdate

Returns:

A cloned VelocityUpdateStrategy

See Also:

Object.clone()

setLocalGuideSelectionStrategy

public void setLocalGuideSelectionStrategy(GuideSelectionStrategy localGuideSelectionStrategy)

getLocalGuideSelectionStrategy

public GuideSelectionStrategy getLocalGuideSelectionStrategy()

setGlobalGuideSelectionStrategy

public void setGlobalGuideSelectionStrategy(GuideSelectionStrategy globalGuideSelectionStrategy)

getGlobalGuideSelectionStrategy

public GuideSelectionStrategy getGlobalGuideSelectionStrategy()

setLocalGuideUpdateStrategy

public void setLocalGuideUpdateStrategy(GuideUpdateStrategy localGuideUpdateStrategy)

getLocalGuideUpdateStrategy

public GuideUpdateStrategy getLocalGuideUpdateStrategy()

setGlobalGuideUpdateStrategy

public void setGlobalGuideUpdateStrategy(GuideUpdateStrategy globalGuideUpdateStrategy)

getGlobalGuideUpdateStrategy

public GuideUpdateStrategy getGlobalGuideUpdateStrategy()

selectGuides

protected void selectGuides(Particle particle)

updateVelocity

public void updateVelocity(Particle particle)

Description copied from class: StandardVelocityUpdate

Perform the velocity update for the given Particle.

Specified by:

updateVelocity in interface VelocityUpdateStrategy

Overrides:

updateVelocity in class StandardVelocityUpdate

Parameters:

particle - The Particle velocity that should be updated.