094684cf7f
git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@1832 331e1502-861f-0410-8da2-ba01fb791d7f
114 lines
3.4 KiB
C++
Executable file
114 lines
3.4 KiB
C++
Executable file
/*
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* <moeoQexploreWeightStrategy.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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* 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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#ifndef MOEOQEXPLWEIGHTSTRAT_H_
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#define MOEOQEXPLWEIGHTSTRAT_H_
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#include <scalarStuffs/weighting/moeoVariableWeightStrategy.h>
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#include <algorithm>
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#include <utility>
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#include <utils/rnd_generators.h>
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//#include <rnd_generators.h>
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/**
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* Change all weights according to a pattern ressembling to a "double strategy" 2 to 1 then 1 to 2.
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* Can only be applied to 2 objectives vector problem
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*/
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template <class MOEOT>
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class moeoQexploreWeightStrategy: public moeoVariableWeightStrategy<MOEOT>
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{
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public:
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/**
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* default constructor
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*/
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moeoQexploreWeightStrategy():random(default_random),depth(0),num(0){}
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/**
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* constructor with a given random generator, for algorithms wanting to keep the same generator for some reason
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* @param _random an uniform random generator
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*/
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moeoQexploreWeightStrategy(UF_random_generator<double> &_random):random(_random),depth(0),num(0){}
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/**
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*
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* @param _weights the weights to change
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* @param moeot a moeot, not used
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*/
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void operator()(std::vector<double> &_weights,const MOEOT &moeot){
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if (depth==0){
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if (num==0){
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num++;
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_weights[0]=0;
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_weights[1]=1;
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}else{
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num=1;
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depth=1;
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_weights[0]=1;
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_weights[1]=0;
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}
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}else{
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while (num<depth && !coprim(depth,num)){
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num++;
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}
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if (num>=depth){
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depth++;
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num=1;
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}
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_weights[0]=(num+0.0)/depth;
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_weights[1]=1-(num+0.0)/depth;
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num++;
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}
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}
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private:
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bool coprim(int a, int b){
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if (b==0){
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return a==1;
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}else {
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return coprim(b,a%b);
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}
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}
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void next_num(){
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}
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UF_random_generator<double> &random;
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UF_random_generator<double> default_random;
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int depth,num,idx;
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std::list<double> toTest;
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};
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#endif
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