7161febf9c
git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@787 331e1502-861f-0410-8da2-ba01fb791d7f
153 lines
4.3 KiB
C++
Executable file
153 lines
4.3 KiB
C++
Executable file
/*
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* <moHC.h>
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* Copyright (C) DOLPHIN Project-Team, INRIA Futurs, 2006-2007
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* (C) OPAC Team, LIFL, 2002-2007
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*
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* Sébastien Cahon, Jean-Charles Boisson (Jean-Charles.Boisson@lifl.fr)
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*
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* This software is governed by the CeCILL license under French law and
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* abiding by the rules of distribution of free software. You can use,
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* modify and/ or redistribute the software under the terms of the CeCILL
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* license as circulated by CEA, CNRS and INRIA at the following URL
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* "http://www.cecill.info".
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*
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* As a counterpart to the access to the source code and rights to copy,
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* modify and redistribute granted by the license, users are provided only
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* with a limited warranty and the software's author, the holder of the
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* economic rights, and the successive licensors have only limited liability.
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*
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* In this respect, the user's attention is drawn to the risks associated
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* with loading, using, modifying and/or developing or reproducing the
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* software by the user in light of its specific status of free software,
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* that may mean that it is complicated to manipulate, and that also
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* therefore means that it is reserved for developers and experienced
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* professionals having in-depth computer knowledge. Users are therefore
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* encouraged to load and test the software's suitability as regards their
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* requirements in conditions enabling the security of their systems and/or
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* data to be ensured and, more generally, to use and operate it in the
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* same conditions as regards security.
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* The fact that you are presently reading this means that you have had
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* knowledge of the CeCILL license and that you accept its terms.
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*
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* ParadisEO WebSite : http://paradiseo.gforge.inria.fr
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* Contact: paradiseo-help@lists.gforge.inria.fr
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*
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*/
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#ifndef __moHC_h
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#define __moHC_h
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#include <eoEvalFunc.h>
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#include "moAlgo.h"
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#include "moMoveExpl.h"
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#include "moHCMoveLoopExpl.h"
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//! Hill Climbing (HC)
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/*!
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Class which describes the algorithm for a hill climbing.
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*/
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template < class M > class moHC:public moAlgo < typename M::EOType >
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{
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//! Alias for the type.
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typedef
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typename
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M::EOType
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EOT;
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//! Alias for the fitness.
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typedef
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typename
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EOT::Fitness
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Fitness;
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public:
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//! Full constructor.
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/*!
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All the boxes are given in order the HC to use a moHCMoveLoopExpl.
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\param __move_init a move initialiser.
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\param __next_move a neighborhood explorer.
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\param __incr_eval a (generally) efficient evaluation function.
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\param __move_select a move selector.
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\param __full_eval a full evaluation function.
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*/
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moHC (moMoveInit < M > &__move_init, moNextMove < M > &__next_move, moMoveIncrEval < M > &__incr_eval, moMoveSelect < M > &__move_select, eoEvalFunc < EOT > &__full_eval):move_expl (*new moHCMoveLoopExpl < M >
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(__move_init, __next_move, __incr_eval, __move_select)),
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full_eval (__full_eval)
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{}
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//! Light constructor.
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/*!
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This constructor allow to use another moMoveExpl (generally not a moHCMoveLoopExpl).
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\param __move_expl a complete explorer.
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\param __full_eval a full evaluation function.
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*/
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moHC (moMoveExpl < M > &__move_expl, eoEvalFunc < EOT > &__full_eval):move_expl (__move_expl),
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full_eval
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(__full_eval)
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{}
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//! Function which launches the HC
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/*!
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The HC has to improve a current solution.
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As the moSA and the mo TS, it can be used for HYBRIDATION in an evolutionnary algorithm.
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\param __sol a current solution to improve.
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\return TRUE.
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*/
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bool operator ()(EOT & __sol)
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{
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if (__sol.invalid ())
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{
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full_eval (__sol);
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}
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EOT new_sol;
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do
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{
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new_sol = __sol;
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try
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{
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move_expl (__sol, new_sol);
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}
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catch (EmptySelection & __ex)
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{
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break;
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}
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if (new_sol.fitness () > __sol.fitness ())
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{
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__sol = new_sol;
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}
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else
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{
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break;
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}
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}
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while (true);
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return true;
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}
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private:
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//! Complete exploration of the neighborhood.
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moMoveExpl < M > &move_expl;
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//! A full evaluation function.
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eoEvalFunc < EOT > &full_eval;
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};
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#endif
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