eoExtendedVelocity< POT > Class Template Reference

Extended velocity performer for particle swarm optimization. More...

#include <eoExtendedVelocity.h>

Inheritance diagram for eoExtendedVelocity< POT >:

List of all members.

Public Types
typedef POT::ParticleVelocityType	VelocityType
Public Member Functions
	eoExtendedVelocity (eoTopology< POT > &_topology, const VelocityType &_w, const VelocityType &_c1, const VelocityType &_c2, const VelocityType &_c3, eoRealVectorBounds &_bounds, eoRealBoundModifier &_bndsModifier, eoRng &_gen=rng)
	Full constructor: Bounds and bound modifier required.
	eoExtendedVelocity (eoTopology< POT > &_topology, const VelocityType &_w, const VelocityType &_c1, const VelocityType &_c2, const VelocityType &_c3, eoRealVectorBounds &_bounds, eoRng &_gen=rng)
	Constructor: No bound updater required <-> fixed bounds.
	eoExtendedVelocity (eoTopology< POT > &_topology, const VelocityType &_w, const VelocityType &_c1, const VelocityType &_c2, const VelocityType &_c3, eoRng &_gen=rng)
	Constructor: Neither bounds nor bound updater required <-> free velocity.
void	operator() (POT &_po, unsigned _indice)
	Evaluate the new velocities of the given particle.
void	updateNeighborhood (POT &_po, unsigned _indice)
	Update the neighborhood.
eoTopology< POT > &	getTopology ()
	eoTopology<POT> getTopology
Protected Attributes
eoTopology< POT > &	topology
const VelocityType &	omega
const VelocityType &	c1
const VelocityType &	c2
const VelocityType &	c3
eoRealVectorBounds	bounds
eoRealBoundModifier &	bndsModifier
eoRng &	gen
eoDummyRealBoundModifier	dummyModifier

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Detailed Description

template<class POT>
class eoExtendedVelocity< POT >

Extended velocity performer for particle swarm optimization.

Derivated from abstract eoVelocity, At step t: v(t+1)= w * v(t) + c1 * r1 * ( xbest(t)-x(t) ) + c2 * r2 * ( lbest(t) - x(t) ) + c3 * r3 * ( gbest(t) - x(t) ) It includes both a "topology" best and a global best in the social knowledge. Each topology provides a method to retrieve the global best <=> the best of all the neighborhood the topology contains.

Examples:

t-eoExtendedVelocity.cpp.

Definition at line 47 of file eoExtendedVelocity.h.

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Constructor & Destructor Documentation

template<class POT>

eoExtendedVelocity< POT >::eoExtendedVelocity	(	eoTopology< POT > &	_topology,
		const VelocityType &	_w,
		const VelocityType &	_c1,
		const VelocityType &	_c2,
		const VelocityType &	_c3,
		eoRealVectorBounds &	_bounds,
		eoRealBoundModifier &	_bndsModifier,
		eoRng &	_gen = rng
	)		[inline]

Full constructor: Bounds and bound modifier required.

Parameters:

_topology	- The topology
_w	- The weight factor.
_c1	- Learning factor used for the particle's best. Type must be POT::ParticleVelocityType
_c2	- Learning factor used for the local best
_c3	- Learning factor used for the global best
_bounds	- An eoRealBaseVectorBounds: real bounds for real velocities. If the velocities are not real, they won't be bounded by default. Should have a eoBounds ?
_bndsModifier	- An eoRealBoundModifier used to modify the bounds (for real bounds only).
_gen	- The eo random generator, default=rng

Definition at line 68 of file eoExtendedVelocity.h.

template<class POT>

eoExtendedVelocity< POT >::eoExtendedVelocity	(	eoTopology< POT > &	_topology,
		const VelocityType &	_w,
		const VelocityType &	_c1,
		const VelocityType &	_c2,
		const VelocityType &	_c3,
		eoRealVectorBounds &	_bounds,
		eoRng &	_gen = rng
	)		[inline]

Constructor: No bound updater required <-> fixed bounds.

Parameters:

_topology	- The topology
_w	- The weight factor.
_c1	- The second learning factor used for the particle's best. Type must be POT::ParticleVelocityType
_c2	- The third learning factor used for the local best. Type must be POT::ParticleVelocityType
_c3	- Learning factor used for the global best
_bounds	- An eoRealBaseVectorBounds: real bounds for real velocities. If the velocities are not real, they won't be bounded by default. Should have a eoBounds ?
_gen	- The eo random generator, default=rng

Definition at line 96 of file eoExtendedVelocity.h.

template<class POT>

eoExtendedVelocity< POT >::eoExtendedVelocity	(	eoTopology< POT > &	_topology,
		const VelocityType &	_w,
		const VelocityType &	_c1,
		const VelocityType &	_c2,
		const VelocityType &	_c3,
		eoRng &	_gen = rng
	)		[inline]

Constructor: Neither bounds nor bound updater required <-> free velocity.

Parameters:

_topology	- The topology
_w	- The weight factor.
_c1	- The second learning factor used for the particle's best. Type must be POT::ParticleVelocityType
_c2	- The third learning factor used for the local best. Type must be POT::ParticleVelocityType
_c3	- Learning factor used for the global best
_gen	- The eo random generator, default=rng

Definition at line 121 of file eoExtendedVelocity.h.

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Member Function Documentation

template<class POT>

void eoExtendedVelocity< POT >::operator()	(	POT &	_po,
		unsigned	_indice
	)		[inline, virtual]

Evaluate the new velocities of the given particle.

Need an indice to identify the particle into the topology.

Parameters:

_po	- A particle
_indice	- The indice (into the topology) of the given particle

Implements eoBF< POT &, unsigned, void >.

Definition at line 144 of file eoExtendedVelocity.h.

References eoRealVectorBounds::adjust_size(), eoRealBaseVectorBounds::minimum(), and eoRng::uniform().

template<class POT>

eoTopology<POT>& eoExtendedVelocity< POT >::getTopology

(

)

[inline, virtual]

eoTopology<POT> getTopology

Returns:

topology

Implements eoVelocity< POT >.

Definition at line 189 of file eoExtendedVelocity.h.

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The documentation for this class was generated from the following file:

• eoExtendedVelocity.h