93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// eoSGAGenOp.h
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// (c) Marc.Schoenauer 2002
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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: todos@geneura.ugr.es, http://geneura.ugr.es
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Marc.Schoenauer@inria.fr
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mak@dhi.dk
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*/
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//-----------------------------------------------------------------------------
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#ifndef _eoSGAGenOp_h
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#define _eoSGAGenOp_h
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#include "eoGenOp.h"
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#include "eoInvalidateOps.h"
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///////////////////////////////////////////////////////////////////////////////
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// class eoSGAGenOp
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///////////////////////////////////////////////////////////////////////////////
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/**
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* eoSGAGenOp (for Simple GA) mimicks the usual crossover with proba pCross +
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* mutation with proba pMut inside an eoGeneralOp
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* It does it exactly as class eoSGATransform, i.e. only accepts
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* quadratic crossover and unary mutation
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* It was introduced for didactic reasons, but seems to be popular :-)
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*
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* @ingroup Combination
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*/
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template<class EOT>
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class eoSGAGenOp : public eoGenOp<EOT>
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{
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public:
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/** Ctor from crossover (with proba) and mutation (with proba)
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* Builds the sequential op that first applies a proportional choice
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* between the crossover and nothing (cloning), then the mutation
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*/
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eoSGAGenOp(eoQuadOp<EOT>& _cross, double _pCross,
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eoMonOp<EOT>& _mut, double _pMut)
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: cross(_cross),
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pCross(_pCross),
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mut(_mut),
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pMut(_pMut)
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{
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// the crossover - with probability pCross
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propOp.add(cross, pCross); // crossover, with proba pcross
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propOp.add(quadClone, 1-pCross); // nothing, with proba 1-pcross
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// now the sequential
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op.add(propOp, 1.0); // always do combined crossover
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op.add(mut, pMut); // then mutation, with proba pmut
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}
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/** do the job: delegate to op */
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virtual void apply(eoPopulator<EOT>& _pop)
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{
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op.apply(_pop);
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}
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/** inherited from eoGenOp */
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virtual unsigned max_production(void) {return 2;}
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virtual std::string className() const {return "eoSGAGenOp";}
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private:
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eoQuadOp<EOT> ✗ // eoInvalidateXXX take the boolean output
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double pCross;
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eoMonOp<EOT> & mut; // of the XXX op and invalidate the EOT
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double pMut;
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eoProportionalOp<EOT> propOp;
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eoQuadCloneOp<EOT> quadClone;
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eoSequentialOp<EOT> op;
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};
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#endif
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