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Left-out from the big change of general op interface!

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evomarc 2001-02-09 05:10:25 +00:00
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// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
//-----------------------------------------------------------------------------
// eoEvolutionStrategy.h
// (c) Maarten Keijzer 2000, GeNeura Team, 1998
/*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact: todos@geneura.ugr.es, http://geneura.ugr.es
*/
//-----------------------------------------------------------------------------
#ifndef _eoEvolutionStrategy_h
#define _eoEvolutionStrategy_h
//-----------------------------------------------------------------------------
#include <eoEasyEA.h>
#include <eoInplaceTransform.h>
/** eoEvolutionStrategy:
*/
template<class EOT>
class eoEvolutionStrategy: public eoAlgo<EOT>
{
public:
struct plus_strategy{};
struct comma_strategy{};
eoEvolutionStrategy(
eoContinue<EOT>& _continuator,
eoEvalFunc<EOT>& _eval,
eoGOpSelector<EOT>& _opSel,
float _lambdaRate,
comma_strategy)
: selectPerc(randomSelect, _lambdaRate),
transform(_opSel),
easyEA(_continuator, _eval, selectPerc, transform, noElitism, truncate)
{}
eoEvolutionStrategy(
eoContinue<EOT>& _continuator,
eoEvalFunc<EOT>& _eval,
eoGOpSelector<EOT>& _opSel,
float _lambdaRate,
plus_strategy)
: selectPerc(randomSelect, _lambdaRate),
transform(_opSel),
easyEA(_continuator, _eval, selectPerc, transform, plus, truncate)
{}
/// Apply a few generation of evolution to the population.
virtual void operator()(eoPop<EOT>& _pop)
{
easyEA(_pop);
}
private:
eoPlus<EOT> plus;
eoNoElitism<EOT> noElitism;
eoTruncate<EOT> truncate;
eoRandomSelect<EOT> randomSelect;
eoSelectPerc<EOT> selectPerc;
eoInplaceTransform2<EOT> transform;
/// easyEA is contained rather than a base because of member initialization order!
eoEasyEA<EOT> easyEA;
};
template <class EOT>
eoEvolutionStrategy<EOT> make_es(eoContinue<EOT>& _continuator,
eoEvalFunc<EOT>& _eval,
eoGOpSelector<EOT>& _opSel,
float _lambdaRate,
bool _comma)
{
if (_comma)
return eoEvolutionStrategy<EOT>(_continuator, _eval, _opSel, _lambdaRate, eoEvolutionStrategy<EOT>::comma_strategy());
//else
return eoEvolutionStrategy<EOT>(_continuator, _eval, _opSel, _lambdaRate, eoEvolutionStrategy<EOT>::plus_strategy());
}
//-----------------------------------------------------------------------------
#endif eoSelectTransformReduce_h