82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
/*
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* <DTLZ5Eval.cpp>
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* Copyright (C) DOLPHIN Project-Team, INRIA Futurs, 2006-2008
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* (C) OPAC Team, LIFL, 2002-2008
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*
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* Arnaud Liefooghe
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* Jeremie Humeau
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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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//-----------------------------------------------------------------------------
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#include <DTLZ5Eval.h>
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#define M_PI 3.14159265358979323846
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#define M_PI_2 1.57079632679489661923
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// Ce code est implémenté à partir de DEME:Dtlz1.cpp
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void DTLZ5Eval::operator() (DTLZ & _element)
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{
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if (_element.invalidObjectiveVector())
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{
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int nbFun= DTLZ::ObjectiveVector::nObjectives();
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int nbVar= _element.size();
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int k;
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double g, t;
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DTLZObjectiveVector objVec;
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double theta[nbFun-1];
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k = nbVar - nbFun + 1;
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g = 0.0;
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for (unsigned i = nbVar - k + 1; i <= nbVar; i++)
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g += pow(_element[i-1]-0.5,2);
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t= M_PI /(4 * (1 + g));
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theta[0]= M_PI_2 * _element[0];
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for (unsigned i = 1; i <= nbFun - 2 ; i++)
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theta[i]= t * (1 + 2 * g * _element[i]);
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for (unsigned i = 1; i <= nbFun; i++) {
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double f = (1 + g);
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for (unsigned j = nbFun - i; j >= 1; j--)
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f *= cos(theta[j-1]);
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if (i > 1)
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f *= sin(theta[(nbFun - i + 1) - 1]);
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objVec[i-1] = f;
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}
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_element.objectiveVector(objVec);
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}
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}
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