107 lines
2.9 KiB
C++
107 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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// eoSimpleEDA.h
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// (c) Marc Schoenauer, Maarten Keijzer, 2001
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/*
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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: Marc.Schoenauer@polytechnique.fr
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mkeijzer@dhi.dk
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*/
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//-----------------------------------------------------------------------------
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#ifndef _eoSimpleEDA_h
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#define _eoSimpleEDA_h
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//-----------------------------------------------------------------------------
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#include <apply.h>
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#include <eoEDA.h>
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#include <eoContinue.h>
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#include <eoDistribUpdater.h>
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#include <eoEvalFunc.h>
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/** A very simple Estimation of Distribution Algorithm
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*
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* The algorithm that evolves a probability distribution
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* on the spaces of populations with the loop
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* generate a population from the current distribution
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* evaluate that population
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* update the distribution
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*
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* @ingroup Algorithms
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*/
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template<class EOT> class eoSimpleEDA: public eoEDA<EOT>
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{
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public:
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/** Ctor from an eoDistribUpdater,
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* plus an eoEval and eoContinue of course.
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*/
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eoSimpleEDA(eoDistribUpdater<EOT>& _update,
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eoEvalFunc<EOT>& _eval,
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unsigned _popSize,
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eoContinue<EOT>& _continuator
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) :
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update(_update),
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eval(_eval),
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popSize(_popSize),
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continuator(_continuator)
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{}
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/** The algorithm:
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* generate pop from distrib,
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* evaluate pop,
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* update distrib
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*/
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virtual void operator()(eoDistribution<EOT>& _distrib)
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{
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eoPop<EOT> pop(popSize, _distrib);
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do
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{
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try
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{
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apply<EOT>(_distrib, pop); // re-init. of _pop from distrib
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apply<EOT>(eval, pop); // eval of current population
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update(_distrib, pop); // updates distrib from _pop
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}
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catch (std::exception& e)
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{
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std::string s = e.what();
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s.append( " in eoSimpleEDA");
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throw std::runtime_error( s );
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}
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} while ( continuator( pop ) );
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}
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private:
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eoDistribUpdater<EOT> & update;
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eoEvalFunc<EOT>& eval;
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unsigned popSize;
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eoContinue<EOT>& continuator;
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};
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//-----------------------------------------------------------------------------
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#endif
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