54a44a177f
Replace http://paradiseo.gforge.inria.fr with https://nojhan.github.io/paradiseo/ and paradiseo-help@lists.gforge.inria.fr with https://github.com/nojhan/paradiseo/issues across all source files, doxyfile templates, cmake packaging, and eo documentation. Also updates eodev.sourceforge.net references in EO headers. Applied to .h, .cpp, .cmake, and miscellaneous files in eo/, mo/, moeo/, smp/, and problems/.
146 lines
4.4 KiB
C++
146 lines
4.4 KiB
C++
/*
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<moLocalSearch.h>
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Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2010
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Sébastien Verel, Arnaud Liefooghe, Jérémie Humeau
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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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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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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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ParadisEO WebSite : https://nojhan.github.io/paradiseo/
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Contact: https://github.com/nojhan/paradiseo/issues
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*/
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#ifndef _moLocalSearch_h
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#define _moLocalSearch_h
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#include <explorer/moNeighborhoodExplorer.h>
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#include <continuator/moContinuator.h>
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#include <neighborhood/moNeighborhood.h>
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#include <eoEvalFunc.h>
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#include <eoOp.h>
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/**
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* the main algorithm of the local search
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*/
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template<class Neighbor>
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class moLocalSearch: public eoMonOp<typename Neighbor::EOT> {
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public:
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typedef moNeighborhood<Neighbor> Neighborhood;
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typedef moNeighborhoodExplorer<Neighbor> NeighborhoodExplorer;
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typedef typename Neighbor::EOT EOT;
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/**
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* Constructor of a moLocalSearch
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* @param _searchExpl a neighborhood explorer
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* @param _cont an external continuator (can be a checkpoint!)
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* @param _fullEval a full evaluation function
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*/
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moLocalSearch(NeighborhoodExplorer& _searchExpl,
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moContinuator<Neighbor> & _cont, eoEvalFunc<EOT>& _fullEval) :
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searchExplorer(_searchExpl), cont(&_cont), fullEval(_fullEval) {
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}
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;
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/**
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* Run the local search on a solution
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* @param _solution the related solution
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*/
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virtual bool operator()(EOT & _solution) {
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if (_solution.invalid())
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fullEval(_solution);
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// initialization of the parameter of the search (for example fill empty the tabu list)
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searchExplorer.initParam(_solution);
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// initialization of the external continuator (for example the time, or the number of generations)
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cont->init(_solution);
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bool b;
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do {
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// explore the neighborhood of the solution
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searchExplorer(_solution);
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// if a solution in the neighborhood can be accepted
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if (searchExplorer.accept(_solution)) {
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searchExplorer.move(_solution);
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searchExplorer.moveApplied(true);
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} else
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searchExplorer.moveApplied(false);
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// update the parameter of the search (for ex. Temperature of the SA)
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searchExplorer.updateParam(_solution);
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b = (*cont)(_solution);
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} while (b && searchExplorer.isContinue(_solution));
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searchExplorer.terminate(_solution);
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cont->lastCall(_solution);
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return true;
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}
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;
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/**
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* Set an external continuator
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* @param _cont the external continuator
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*/
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void setContinuator(moContinuator<Neighbor> & _cont) {
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cont = &_cont;
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}
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/**
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* external continuator object
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*
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* @overload
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* @return the external continuator
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*/
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moContinuator<Neighbor>* getContinuator() const {
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return cont;
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}
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/**
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* to get the neighborhood explorer
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*
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* @overload
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* @return the neighborhood explorer
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*/
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moNeighborhoodExplorer<Neighbor> & getNeighborhoodExplorer() const {
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return searchExplorer;
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}
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protected:
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// make the exploration of the neighborhood according to a local search heuristic
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moNeighborhoodExplorer<Neighbor>& searchExplorer;
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// external continuator
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moContinuator<Neighbor> * cont;
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//full evaluation function
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eoEvalFunc<EOT>& fullEval;
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};
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#endif
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