154 lines
4.6 KiB
C++
154 lines
4.6 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// eoVectorParticle.h
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// (c) OPAC 2007
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/*
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Contact: thomas.legrand@lifl.fr
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*/
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//-----------------------------------------------------------------------------
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#ifndef _EOVECTORPARTICLE_H
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#define _EOVECTORPARTICLE_H
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#include "PO.h"
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/**
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@addtogroup Representations
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@{
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*/
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/**
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* Main class for particle representation of particle swarm optimization. The positions, velocities and the best positions
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* associated to the particle are stored as vectors. Inheriting from PO and std::vector,
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* tree templates arguments are required: the fitness type (which is also the type of the
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* particle's best fitness), the position type and the velocity type.
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*/
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template < class FitT, class PositionType, class VelocityType >
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class eoVectorParticle : public PO < FitT >, public std::vector < PositionType >
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{
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public:
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using PO < FitT >::invalidate;
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using
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std::vector <
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PositionType >::operator[];
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using
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std::vector <
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PositionType >::begin;
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using
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std::vector <
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PositionType >::end;
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using
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std::vector <
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PositionType >::size;
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typedef PositionType AtomType;
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typedef VelocityType ParticleVelocityType;
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/** Default constructor.
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* @param _size Length of the tree vectors (we expect the same size), default is 0
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* @param _position
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* @param _velocity
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* @param _bestPositions
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*/
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eoVectorParticle (unsigned _size = 0,PositionType _position = PositionType (), VelocityType _velocity = VelocityType (), PositionType _bestPositions = PositionType ()):PO < FitT > (),std::vector < PositionType > (_size, _position), bestPositions (_size, _bestPositions), velocities (_size,
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_velocity)
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{
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}
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// we can't have a Ctor from a std::vector, it would create ambiguity
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// with the copy Ctor
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void
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position (const std::vector < PositionType > &_v)
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{
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if (_v.size () != size ()) // safety check
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{
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if (size ()) // NOT an initial empty std::vector
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eo::log << eo::warnings <<
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"Warning: Changing position size in eoVectorParticle assignation"
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<< std::endl;
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resize (_v.size ());
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}
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std::copy (_v.begin (), _v.end (), begin ());
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invalidate ();
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}
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/** Resize the tree vectors of the particle: positions, velocities and bestPositions
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* @param _size The new size for positions, velocities and bestPositions
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*/
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void
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resize (unsigned _size)
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{
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std::vector < PositionType >::resize (_size);
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bestPositions.resize (_size);
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velocities.resize (_size);
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}
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/** Resize the best positions.
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* @param _size The new size for the best positions.
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*/
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void
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resizeBestPositions (unsigned _size)
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{
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bestPositions.resize (_size);
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}
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/** Resize the velocities.
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* @param _size The new size for the velocities.
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*/
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void
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resizeVelocities (unsigned _size)
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{
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velocities.resize (_size);
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}
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/// to avoid conflicts between EA and PSO
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bool operator<(const eoVectorParticle<FitT, PositionType, VelocityType >& _eo) const
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{
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if (_eo.best() > this->best())
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return true;
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else
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return false;
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}
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/**
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* Print-on a vector-particle
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*/
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virtual void printOn(std::ostream& os) const
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{
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PO<FitT>::printOn(os);
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os << ' ';
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os << size() << ' ';
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std::copy(bestPositions.begin(), bestPositions.end(), std::ostream_iterator<AtomType>(os, " "));
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}
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/* public attributes */
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std::vector < PositionType > bestPositions;
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std::vector < ParticleVelocityType > velocities;
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};
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#endif /*_EOVECTORPARTICLE_H*/
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/** @} */
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