8b7d5260fb
git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@400 331e1502-861f-0410-8da2-ba01fb791d7f
90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// moeoBinaryMetricSavingUpdater.h
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// (c) OPAC Team (LIFL), Dolphin Project (INRIA), 2007
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/*
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This library...
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Contact: paradiseo-help@lists.gforge.inria.fr, http://paradiseo.gforge.inria.fr
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*/
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//-----------------------------------------------------------------------------
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#ifndef MOEOBINARYMETRICSAVINGUPDATER_H_
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#define MOEOBINARYMETRICSAVINGUPDATER_H_
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#include <fstream>
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#include <string>
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#include <vector>
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#include <eoPop.h>
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#include <utils/eoUpdater.h>
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#include <metric/moeoMetric.h>
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/**
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* This class allows to save the progression of a binary metric comparing the objective vectors of the current population (or archive)
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* with the objective vectors of the population (or archive) of the generation (n-1) into a file
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*/
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template < class MOEOT >
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class moeoBinaryMetricSavingUpdater : public eoUpdater
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{
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public:
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/** The objective vector type of a solution */
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typedef typename MOEOT::ObjectiveVector ObjectiveVector;
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/**
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* Ctor
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* @param _metric the binary metric comparing two Pareto sets
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* @param _pop the main population
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* @param _filename the target filename
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*/
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moeoBinaryMetricSavingUpdater (moeoVectorVsVectorBinaryMetric < ObjectiveVector, double > & _metric, const eoPop < MOEOT > & _pop, std::string _filename) :
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metric(_metric), pop(_pop), filename(_filename), counter(1)
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{}
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/**
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* Saves the metric's value for the current generation
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*/
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void operator()() {
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if (pop.size()) {
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if (firstGen) {
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firstGen = false;
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}
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else {
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// creation of the two Pareto sets
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std::vector < ObjectiveVector > from;
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std::vector < ObjectiveVector > to;
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for (unsigned int i=0; i<pop.size(); i++)
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from.push_back(pop[i].objectiveVector());
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for (unsigned int i=0 ; i<oldPop.size(); i++)
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to.push_back(oldPop[i].objectiveVector());
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// writing the result into the file
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std::ofstream f (filename.c_str(), std::ios::app);
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f << counter++ << ' ' << metric(from,to) << std::endl;
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f.close();
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}
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oldPop = pop;
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}
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}
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private:
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/** binary metric comparing two Pareto sets */
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moeoVectorVsVectorBinaryMetric < ObjectiveVector, double > & metric;
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/** main population */
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const eoPop < MOEOT > & pop;
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/** (n-1) population */
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eoPop< MOEOT > oldPop;
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/** target filename */
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std::string filename;
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/** is it the first generation ? */
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bool firstGen;
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/** counter */
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unsigned int counter;
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};
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#endif /*MOEOBINARYMETRICSAVINGUPDATER_H_*/
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