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/*
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* <moeoMetricFitnessAssignment.h>
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* Copyright (C) DOLPHIN Project-Team, INRIA Lille-Nord Europe, 2006-2008
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* (C) OPAC Team, LIFL, 2002-2008
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*
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* François Legillon
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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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// moeoMetrucFitnessAssignment.h
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//-----------------------------------------------------------------------------
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#ifndef MOEOMETRICFITNESSASSIGNMENT_H_
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#define MOEOMETRICFITNESSASSIGNMENT_H_
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#include <moeo>
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#include <eo>
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#include <vector>
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#include <eoPop.h>
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#include <fitness/moeoSingleObjectivization.h>
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#include <utils/moeoObjectiveVectorNormalizer.h>
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/*
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* Fitness assignment scheme which use a metric
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*/
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template < class MOEOT>
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class moeoMetricFitnessAssignment : public moeoSingleObjectivization < MOEOT >
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{
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public:
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/** the objective vector type of the solutions */
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typedef typename MOEOT::ObjectiveVector ObjectiveVector;
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typedef typename MOEOT::Fitness Fitness;
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typedef typename ObjectiveVector::Type Type;
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/**
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* Default ctor
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* @param _metric a metric function to calculate fitness
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* @param _negate true if fitness should be maxed
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*/
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moeoMetricFitnessAssignment(moeoUnaryMetric<ObjectiveVector,Fitness> &_metric, bool _negate=true) : metric(_metric),eval(defaultEval),negate(_negate)
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{}
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/**
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* ctor with an evaluation fonction, applied if give moeot is invalid
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* @param _eval a evalFunc to regenerate the objectiveVector if needed
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* @param _metric a metric function to calculate fitness
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* @param _negate true if fitness should be maxed
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*/
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moeoMetricFitnessAssignment(moeoUnaryMetric<ObjectiveVector,Fitness> &_metric,eoEvalFunc<MOEOT> &_eval, bool _negate=false) : metric(_metric),eval(_eval),negate(_negate)
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{}
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/**
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* Sets the fitness values for a moeot
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* @param _mo the MOEOT
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*/
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void operator()(MOEOT & _mo){
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if (_mo.invalidObjectiveVector()) eval(_mo);
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_mo.fitness(operator()(_mo.objectiveVector()));
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}
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/**
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return the fitness of a valid objectiveVector
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@param _mo the objectiveVector
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@return the fitness value of _mo
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*/
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typename MOEOT::Fitness operator()(const typename MOEOT::ObjectiveVector & _mo){
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if (negate)
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return 1/metric(_mo);
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else return metric(_mo);
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}
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/**
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* Sets the fitness values for every solution contained in the population _pop (and in the archive)
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* @param _pop the population
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*/
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void operator()(eoPop < MOEOT > & _pop)
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{
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unsigned int pop_size= _pop.size();
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for (unsigned int k=0; k<pop_size; k++){
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operator()(_pop[k]);
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}
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}
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/**
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* Warning: no yet implemented: Updates the fitness values of the whole population _pop by taking the deletion of the objective vector _objVec into account.
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* @param _pop the population
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* @param _objVec the objective vector
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*/
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void updateByDeleting(eoPop < MOEOT > & _pop, ObjectiveVector & _objVec)
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{
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//std::cout << "WARNING : updateByDeleting not implemented in moeoAssignmentFitnessAssignment" << std::endl;
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}
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private:
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moeoUnaryMetric<typename MOEOT::ObjectiveVector,Fitness> &metric;
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eoEvalFunc<MOEOT> &eval;
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bool negate;
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class DummyEval: public eoEvalFunc<MOEOT>{
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void operator()(MOEOT &moeo){
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}
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} defaultEval;
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};
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#endif /*MOEOMETRICFITNESSASSIGNMENT_H_*/
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