82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
/*
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<moPopSolEval.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 ue,
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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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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 : http://paradiseo.gforge.inria.fr
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Contact: paradiseo-help@lists.gforge.inria.fr
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*/
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#ifndef _moPopSolEval_h
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#define _moPopSolEval_h
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#include <problems/bitString/moPopSol.h>
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#include <eoEvalFunc.h>
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#include <cmath>
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/**
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* To compute the fitness of a pop-based solution
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*/
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template< class EOT >
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class moPopSolEval : public eoEvalFunc<EOT>
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{
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public:
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typedef typename EOT::SUBEOT SUBEOT;
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/**
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* default constructor
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*
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* @param _eval evaluation function of the solution
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* @param _p the exponent of the p-norm to compute the population based fitness
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*/
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moPopSolEval(eoEvalFunc<SUBEOT>& _eval, unsigned int _p): eval(_eval), p(_p){}
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/**
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* to compute the fitness of a population-based solution
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* which is the norm p of the fitness of solutions: ( sigma_{i} f(s_i)^p )^(1/p)
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*
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* re-compute the fitness of solution which are invalid
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*
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* @param _sol the population-based solution to evaluate
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*/
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void operator() (EOT& _sol) {
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double fit = 0;
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for (unsigned int i = 0; i < _sol.size(); i++) {
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if(_sol[i].invalid())
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eval(_sol[i]);
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fit += pow((double) _sol[i].fitness(), (int) p);
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}
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fit = pow((double) fit, (double)1/p);
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_sol.fitness(fit);
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}
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private:
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eoEvalFunc<SUBEOT>& eval;
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unsigned int p;
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};
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#endif
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