c8049ca6cd
git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@232 331e1502-861f-0410-8da2-ba01fb791d7f
89 lines
2.9 KiB
C++
89 lines
2.9 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// moeoSelectFormPopAndArch.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 MOEOSELECTONEFROMPOPANDARCH_H_
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#define MOEOSELECTONEFROMPOPANDARCH_H_
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#include <eoPop.h>
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#include <utils/eoRNG.h>
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#include <moeoArchive.h>
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#include <moeoSelectOne.h>
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#include <moeoRandomSelect.h>
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/**
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* Elitist selection process that consists in choosing individuals in the archive as well as in the current population.
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*/
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template < class MOEOT >
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class moeoSelectFromPopAndArch : public moeoSelectOne < MOEOT >
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{
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public:
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/**
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* Ctor
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* @param _popSelectOne the population's selection operator
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* @param _archSelectOne the archive's selection operator
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* @param _arch the archive
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* @param _ratioFromPop the ratio of selected individuals from the population
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*/
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moeoSelectFromPopAndArch (moeoSelectOne < MOEOT > & _popSelectOne, moeoSelectOne < MOEOT > _archSelectOne, moeoArchive < MOEOT > & _arch, double _ratioFromPop=0.5)
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: popSelectOne(_popSelectOne), archSelectOne(_archSelectOne), arch(_arch), ratioFromPop(_ratioFromPop)
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{}
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/**
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* Defaulr ctor - the archive's selection operator is a random selector
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* @param _popSelectOne the population's selection operator
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* @param _arch the archive
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* @param _ratioFromPop the ratio of selected individuals from the population
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*/
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moeoSelectFromPopAndArch (moeoSelectOne < MOEOT > & _popSelectOne, moeoArchive < MOEOT > & _arch, double _ratioFromPop=0.5)
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: popSelectOne(_popSelectOne), archSelectOne(randomSelectOne), arch(_arch), ratioFromPop(_ratioFromPop)
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{}
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/**
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* The selection process
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*/
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virtual const MOEOT & operator () (const eoPop < MOEOT > & pop)
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{
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if (arch.size() > 0)
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if (rng.flip(ratioFromPop))
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return popSelectOne(pop);
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else
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return archSelectOne(arch);
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else
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return popSelectOne(pop);
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}
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/**
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* Setups some population stats
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*/
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virtual void setup (const eoPop < MOEOT > & _pop)
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{
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popSelectOne.setup(_pop);
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}
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private:
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/** The population's selection operator */
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moeoSelectOne < MOEOT > & popSelectOne;
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/** The archive's selection operator */
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moeoSelectOne < MOEOT > & archSelectOne;
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/** The archive */
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moeoArchive < MOEOT > & arch;
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/** The ratio of selected individuals from the population*/
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double ratioFromPop;
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/** A random selection operator (used as default for archSelectOne) */
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moeoRandomSelect < MOEOT > randomSelectOne;
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};
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#endif /*MOEOSELECTONEFROMPOPANDARCH_H_*/
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