eoFixedInertiaWeightedVelocity< POT > Class Template Reference

Inertia weight based velocity performer. More...

#include <eoFixedInertiaWeightedVelocity.h>

Inheritance diagram for eoFixedInertiaWeightedVelocity< POT >:

eoVelocity< POT > eoBF< POT &, unsigned, void > eoFunctorBase

List of all members.

Public Types

typedef POT::ParticleVelocityType VelocityType

Public Member Functions

 eoFixedInertiaWeightedVelocity (eoTopology< POT > &_topology, const VelocityType &_weight, const VelocityType &_c1, const VelocityType &_c2, eoRealVectorBounds &_bounds, eoRealBoundModifier &_bndsModifier, eoRng &_gen=rng)
 Full constructor: Bounds and bound modifier required.
 eoFixedInertiaWeightedVelocity (eoTopology< POT > &_topology, const VelocityType &_weight, const VelocityType &_c1, const VelocityType &_c2, eoRealVectorBounds &_bounds, eoRng &_gen=rng)
 Constructor: No bound updater required <-> fixed bounds.
 eoFixedInertiaWeightedVelocity (eoTopology< POT > &_topology, const VelocityType &_weight, const VelocityType &_c1, const VelocityType &_c2, 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.

Protected Attributes

eoTopology< POT > & topology
const VelocityType & c1
const VelocityType & c2
const VelocityType & weight
eoRnggen
eoRealVectorBoundsbounds
eoRealBoundModifierbndsModifier
eoDummyRealBoundModifier dummyModifier


Detailed Description

template<class POT>
class eoFixedInertiaWeightedVelocity< POT >

Inertia weight based velocity performer.

Derivated from abstract eoVelocity, At step t+1 : v(t+1)= w * v(t) + c1*r1 * (xbest(t)-x(t)) + c2*r2 * (gbest(t) - x(t)) w is fixed for all the particles and all the generations. (ci and w given; Ri chosen at random * in [0;1])

Definition at line 42 of file eoFixedInertiaWeightedVelocity.h.


Constructor & Destructor Documentation

template<class POT>
eoFixedInertiaWeightedVelocity< POT >::eoFixedInertiaWeightedVelocity ( eoTopology< POT > &  _topology,
const VelocityType &  _weight,
const VelocityType &  _c1,
const VelocityType &  _c2,
eoRealVectorBounds _bounds,
eoRealBoundModifier _bndsModifier,
eoRng _gen = rng 
) [inline]

Full constructor: Bounds and bound modifier required.

Parameters:
_topology - The topology to get the global/local/other best
_weight - The weight with type VelocityType
_c1 - The first learning factor used for the particle's best. Type must be POT::ParticleVelocityType
_c2 - The second learning factor used for the local/global best(s). Type must be POT::ParticleVelocityType
_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 ?
_boundsModifier - An eoRealBoundModifier used to modify the bounds (for real bounds only).
_gen - The eo random generator, default=rng

Definition at line 62 of file eoFixedInertiaWeightedVelocity.h.

template<class POT>
eoFixedInertiaWeightedVelocity< POT >::eoFixedInertiaWeightedVelocity ( eoTopology< POT > &  _topology,
const VelocityType &  _weight,
const VelocityType &  _c1,
const VelocityType &  _c2,
eoRealVectorBounds _bounds,
eoRng _gen = rng 
) [inline]

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

Parameters:
_topology - The topology to get the global/local/other best
_weight - The weight with type VelocityType
_c1 - The first learning factor used for the particle's best. Type must be POT::ParticleVelocityType
_c2 - The second learning factor used for the local/global best(s). Type must be POT::ParticleVelocityType
_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 87 of file eoFixedInertiaWeightedVelocity.h.

template<class POT>
eoFixedInertiaWeightedVelocity< POT >::eoFixedInertiaWeightedVelocity ( eoTopology< POT > &  _topology,
const VelocityType &  _weight,
const VelocityType &  _c1,
const VelocityType &  _c2,
eoRng _gen = rng 
) [inline]

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

Parameters:
_topology - The topology to get the global/local/other best
_weight - The weight with type VelocityType
_c1 - The first learning factor used for the particle's best. Type must be POT::ParticleVelocityType
_c2 - The second learning factor used for the local/global best(s). Type must be POT::ParticleVelocityType
_gen - The eo random generator, default=rng

Definition at line 109 of file eoFixedInertiaWeightedVelocity.h.


Member Function Documentation

template<class POT>
void eoFixedInertiaWeightedVelocity< 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. Steps are :

  • evaluate r1 and r2, the customed learning factors
  • adjust the size of the bounds (even if dummy)
  • modify the bounds with the bounds modifier (use the dummy modifier if there's no modifier provided)
    Parameters:
    _po - A particle
    _indice - The indice (into the topology) of the given particle

Implements eoBF< POT &, unsigned, void >.

Definition at line 132 of file eoFixedInertiaWeightedVelocity.h.

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


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

Generated on Thu Jan 1 23:19:46 2009 for EvolvingObjects by  doxygen 1.5.5