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MOEO full import

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git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@23 331e1502-861f-0410-8da2-ba01fb791d7f
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legrand 2006-12-06 10:14:16 +00:00
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trunk/paradiseo-moeo/src/metric/moeoBinaryMetricSavingUpdater.h Normal file
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// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
//-----------------------------------------------------------------------------
// moeoBinaryMetricSavingUpdater.h
// (c) OPAC Team (LIFL), Dolphin Project (INRIA), 2006
/*
This library...
Contact: paradiseo-help@lists.gforge.inria.fr, http://paradiseo.gforge.inria.fr
*/
//-----------------------------------------------------------------------------
#ifndef MOEOBINARYMETRICSAVINGUPDATER_H_
#define MOEOBINARYMETRICSAVINGUPDATER_H_
#include <fstream>
#include <string>
#include <eoPop.h>
#include <utils/eoUpdater.h>
#include <metric/moeoMetric.h>
/**
* This class allows to save the progression of a binary metric comparing the fitness values of the current population (or archive)
* with the fitness values of the population (or archive) of the generation (n-1) into a file
*/
template < class EOT > class moeoBinaryMetricSavingUpdater:public eoUpdater
{
public:
/**
* The fitness type of a solution
*/
typedef typename EOT::Fitness EOFitness;
/**
* Ctor
* @param _metric the binary metric comparing two Pareto sets
* @param _pop the main population
* @param _filename the target filename
*/
moeoBinaryMetricSavingUpdater (moeoVectorVsVectorBM < EOT, double >&_metric,
const eoPop < EOT > &_pop,
std::string _filename):metric (_metric),
pop (_pop), filename (_filename), counter (1)
{
}
/**
* Saves the metric's value for the current generation
*/
void operator () ()
{
if (pop.size ())
{
if (firstGen)
{
firstGen = false;
}
else
{
// creation of the two Pareto sets
std::vector < EOFitness > from;
std::vector < EOFitness > to;
for (unsigned i = 0; i < pop.size (); i++)
from.push_back (pop[i].fitness ());
for (unsigned i = 0; i < oldPop.size (); i++)
to.push_back (oldPop[i].fitness ());
// writing the result into the file
std::ofstream f (filename.c_str (), std::ios::app);
f << counter++ << ' ' << metric (from, to) << std::endl;
f.close ();
}
oldPop = pop;
}
}
private:
/** binary metric comparing two Pareto sets */
moeoVectorVsVectorBM < EOT, double >&metric;
/** main population */
const eoPop < EOT > &pop;
/** (n-1) population */
eoPop < EOT > oldPop;
/** target filename */
std::string filename;
/** is it the first generation ? */
bool firstGen;
/** counter */
unsigned counter;
};
#endif /*MOEOBINARYMETRICSAVINGUPDATER_H_ */