120 lines
3.5 KiB
C++
120 lines
3.5 KiB
C++
/** -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// eoEsLocalXover.h : ES global crossover
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// (c) Marc Schoenauer 2001
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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 http://eeaax.cmap.polytchnique.fr/
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*/
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//-----------------------------------------------------------------------------
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#ifndef _eoEsLocalXover_H
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#define _eoEsLocalXover_H
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#include <utils/eoRNG.h>
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#include <es/eoEsSimple.h>
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#include <es/eoEsStdev.h>
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#include <es/eoEsFull.h>
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#include <eoGenOp.h>
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// needs a selector - here random
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#include <eoRandomSelect.h>
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/** Standard (i.e. eoBinOp) crossover operator for ES genotypes.
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* Uses some Atom crossovers to handle both the object variables
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* and the mutation strategy parameters
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* It is an eoBinOp and has to be wrapped into an eoGenOp before being used
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* like the global version
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*/
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template<class EOT>
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class eoEsStandardXover: public eoBinOp<EOT>
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{
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public:
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typedef typename EOT::Fitness FitT;
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/**
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* (Default) Constructor.
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*/
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eoEsStandardXover(eoBinOp<double> & _crossObj, eoBinOp<double> & _crossMut) :
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crossObj(_crossObj), crossMut(_crossMut) {}
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/// The class name. Used to display statistics
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virtual std::string className() const { return "eoEsStandardXover"; }
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/**
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* modifies one parents in the populator
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* using a second parent
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*/
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bool operator()(EOT& _eo1, const EOT& _eo2)
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{
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bool bLoc=false;
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// first, the object variables
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for (unsigned i=0; i<_eo1.size(); i++)
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{
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bLoc |= crossObj(_eo1[i], _eo2[i]); // apply eoBinOp
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}
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// then the self-adaptation parameters
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bLoc |= cross_self_adapt(_eo1, _eo2);
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return bLoc;
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}
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private:
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// the method to cross slef-adaptation parameters: need to specialize
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bool cross_self_adapt(eoEsSimple<FitT> & _parent1, const eoEsSimple<FitT> & _parent2)
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{
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return crossMut(_parent1.stdev, _parent2.stdev); // apply eoBinOp
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}
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bool cross_self_adapt(eoEsStdev<FitT> & _parent1, const eoEsStdev<FitT> & _parent2)
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{
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bool bLoc=false;
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for (unsigned i=0; i<_parent1.size(); i++)
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{
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bLoc |= crossMut(_parent1.stdevs[i], _parent2.stdevs[i]); // apply eoBinOp
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}
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return bLoc;
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}
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bool cross_self_adapt(eoEsFull<FitT> & _parent1, const eoEsFull<FitT> & _parent2)
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{
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bool bLoc=false;
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unsigned i;
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// the StDev
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for (i=0; i<_parent1.size(); i++)
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{
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bLoc |= crossMut(_parent1.stdevs[i], _parent2.stdevs[i]); // apply eoBinOp
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}
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// the roataion angles
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for (i=0; i<_parent1.correlations.size(); i++)
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{
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bLoc |= crossMut(_parent1.correlations[i], _parent2.correlations[i]); // apply eoBinOp
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}
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return bLoc;
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}
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// the data
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eoRandomSelect<EOT> sel;
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eoBinOp<double> & crossObj;
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eoBinOp<double> & crossMut;
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};
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#endif
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