119 lines
3.4 KiB
C++
119 lines
3.4 KiB
C++
/** -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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-----------------------------------------------------------------------------
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eoMergeReduce.h
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(c) Maarten Keijzer, GeNeura Team, 2000
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Contact: todos@geneura.ugr.es, http://geneura.ugr.es
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*/
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//-----------------------------------------------------------------------------
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#ifndef _eoMergeReduce_h
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#define _eoMergeReduce_h
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//-----------------------------------------------------------------------------
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#include <eoPop.h>
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#include <eoFunctor.h>
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#include <eoMerge.h>
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#include <eoReduce.h>
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#include <eoReplacement.h>
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#include <utils/eoHowMany.h>
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//-----------------------------------------------------------------------------
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/**
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Replacement strategies that combine en eoMerge and an eoReduce.
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@class eoMergeReduce, the base (pure abstract) class
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@class eoPlusReplacement the ES plus strategy
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@class eoCommaReplacement the ES comma strategy
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*/
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/**
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eoMergeReduce: abstract replacement strategy that is just an application of
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an embedded merge, followed by an embedded reduce
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@ingroup Replacors
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*/
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template <class EOT>
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class eoMergeReduce : public eoReplacement<EOT>
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{
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public:
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eoMergeReduce(eoMerge<EOT>& _merge, eoReduce<EOT>& _reduce) :
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merge(_merge), reduce(_reduce)
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{}
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void operator()(eoPop<EOT>& _parents, eoPop<EOT>& _offspring)
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{
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merge(_parents, _offspring); // parents untouched, result in offspring
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reduce(_offspring, _parents.size());
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_parents.swap(_offspring);
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}
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private :
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eoMerge<EOT>& merge;
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eoReduce<EOT>& reduce;
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};
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/**
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ES type of replacement strategy: first add parents to population, then truncate
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@ingroup Replacors
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*/
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template <class EOT>
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class eoPlusReplacement : public eoMergeReduce<EOT>
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{
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public :
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eoPlusReplacement() : eoMergeReduce<EOT>(plus, truncate) {}
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private :
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eoPlus<EOT> plus;
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eoTruncate<EOT> truncate;
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};
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/**
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ES type of replacement strategy: ignore parents, truncate offspring
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@ingroup Replacors
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*/
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template <class EOT>
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class eoCommaReplacement : public eoMergeReduce<EOT>
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{
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public :
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eoCommaReplacement() : eoMergeReduce<EOT>(no_elite, truncate) {}
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private :
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eoNoElitism<EOT> no_elite;
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eoTruncate<EOT> truncate;
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};
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/**
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EP type of replacement strategy: first add parents to population,
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then truncate using EP tournament
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@ingroup Replacors
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*/
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template <class EOT>
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class eoEPReplacement : public eoMergeReduce<EOT>
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{
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public :
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eoEPReplacement(int _tSize) : eoMergeReduce<EOT>(plus, truncate), truncate(_tSize)
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// {truncate.setSize(_tSize);}
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{}
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private :
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eoPlus<EOT> plus;
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eoEPReduce<EOT> truncate;
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};
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#endif
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