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git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@267 331e1502-861f-0410-8da2-ba01fb791d7f
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liefooga 2007-04-17 15:53:56 +00:00
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trunk/paradiseo-moeo/src/moeoSelectFromPopAndArch.h Normal file
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// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
//-----------------------------------------------------------------------------
// moeoSelectFormPopAndArch.h
// (c) OPAC Team (LIFL), Dolphin Project (INRIA), 2007
/*
This library...
Contact: paradiseo-help@lists.gforge.inria.fr, http://paradiseo.gforge.inria.fr
*/
//-----------------------------------------------------------------------------
#ifndef MOEOSELECTONEFROMPOPANDARCH_H_
#define MOEOSELECTONEFROMPOPANDARCH_H_
#include <eoPop.h>
#include <utils/eoRNG.h>
#include <moeoArchive.h>
#include <moeoSelectOne.h>
#include <moeoRandomSelect.h>
/**
* Elitist selection process that consists in choosing individuals in the archive as well as in the current population.
*/
template < class MOEOT >
class moeoSelectFromPopAndArch : public moeoSelectOne < MOEOT >
{
public:
/**
* Ctor
* @param _popSelectOne the population's selection operator
* @param _archSelectOne the archive's selection operator
* @param _arch the archive
* @param _ratioFromPop the ratio of selected individuals from the population
*/
moeoSelectFromPopAndArch (moeoSelectOne < MOEOT > & _popSelectOne, moeoSelectOne < MOEOT > _archSelectOne, moeoArchive < MOEOT > & _arch, double _ratioFromPop=0.5)
: popSelectOne(_popSelectOne), archSelectOne(_archSelectOne), arch(_arch), ratioFromPop(_ratioFromPop)
{}
/**
* Defaulr ctor - the archive's selection operator is a random selector
* @param _popSelectOne the population's selection operator
* @param _arch the archive
* @param _ratioFromPop the ratio of selected individuals from the population
*/
moeoSelectFromPopAndArch (moeoSelectOne < MOEOT > & _popSelectOne, moeoArchive < MOEOT > & _arch, double _ratioFromPop=0.5)
: popSelectOne(_popSelectOne), archSelectOne(randomSelectOne), arch(_arch), ratioFromPop(_ratioFromPop)
{}
/**
* The selection process
*/
virtual const MOEOT & operator () (const eoPop < MOEOT > & pop)
{
if (arch.size() > 0)
if (rng.flip(ratioFromPop))
return popSelectOne(pop);
else
return archSelectOne(arch);
else
return popSelectOne(pop);
}
/**
* Setups some population stats
*/
virtual void setup (const eoPop < MOEOT > & _pop)
{
popSelectOne.setup(_pop);
}
private:
/** The population's selection operator */
moeoSelectOne < MOEOT > & popSelectOne;
/** The archive's selection operator */
moeoSelectOne < MOEOT > & archSelectOne;
/** The archive */
moeoArchive < MOEOT > & arch;
/** The ratio of selected individuals from the population*/
double ratioFromPop;
/** A random selection operator (used as default for archSelectOne) */
moeoRandomSelect < MOEOT > randomSelectOne;
};
#endif /*MOEOSELECTONEFROMPOPANDARCH_H_*/