202 lines
7.5 KiB
C++
202 lines
7.5 KiB
C++
/*
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* Open BEAGLE
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* Copyright (C) 2001-2007 by Christian Gagne and Marc Parizeau
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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 2.1 of the License, or (at your option) any later version.
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*
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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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*
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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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*
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* Contact:
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* Laboratoire de Vision et Systemes Numeriques
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* Departement de genie electrique et de genie informatique
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* Universite Laval, Quebec, Canada, G1K 7P4
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* http://vision.gel.ulaval.ca
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*
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*/
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/*!
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* \file beagle/GA/src/MutationShuffleIntVecOp.cpp
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* \brief Source code of class GA::MutationShuffleIntVecOp.
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* \author Christian Gagne
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* \author Marc Parizeau
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* $Revision: 1.4.2.1 $
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* $Date: 2007/05/09 01:51:03 $
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*/
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#include "beagle/GA.hpp"
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#include <algorithm>
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#include <string>
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using namespace Beagle;
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/*!
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* \brief Construct an integer vector GA shuffle mutation operator.
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* \param inMutationPbName Mutation probability parameter name used in register.
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* \param inIntMutatePbName Mutation integer probability parameter name used in register.
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* \param inName Name of the operator.
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*/
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GA::MutationShuffleIntVecOp::MutationShuffleIntVecOp(Beagle::string inMutationPbName,
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Beagle::string inIntMutatePbName,
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Beagle::string inName) :
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Beagle::MutationOp(inMutationPbName, inName),
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mIntMutatePbName(inIntMutatePbName)
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{ }
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/*!
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* \brief Initialize the integer vector GA shuffle mutation operator.
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* \param ioSystem System of the evolution.
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*/
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void GA::MutationShuffleIntVecOp::initialize(System& ioSystem)
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{
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Beagle_StackTraceBeginM();
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Beagle::MutationOp::initialize(ioSystem);
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if(ioSystem.getRegister().isRegistered(mMutationPbName)) {
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ioSystem.getRegister().deleteEntry(mMutationPbName);
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}
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if(ioSystem.getRegister().isRegistered(mMutationPbName)) {
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mMutationProba = castHandleT<Float>(ioSystem.getRegister()[mMutationPbName]);
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} else {
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mMutationProba = new Float(float(0.1));
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Register::Description lProbaDescription(
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"Individual shuffle mutation prob.",
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"Float",
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"0.1",
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"Integer vector shuffle mutation probability for each GA individual."
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);
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ioSystem.getRegister().addEntry(mMutationPbName, mMutationProba, lProbaDescription);
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}
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if(ioSystem.getRegister().isRegistered(mIntMutatePbName)) {
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mIntMutateProba = castHandleT<Float>(ioSystem.getRegister()[mIntMutatePbName]);
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} else {
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mIntMutateProba = new Float(float(0.1));
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Register::Description lIntDescription(
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"Int shuffle mutation probability",
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"Float",
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"0.1",
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"Probability for each integer to be modified by mutation, when an individual is mutated."
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);
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ioSystem.getRegister().addEntry(mIntMutatePbName, mIntMutateProba, lIntDescription);
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}
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Beagle_StackTraceEndM("void GA::MutationShuffleIntVecOp::initialize(System& ioSystem)");
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}
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/*!
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* \brief Shuffle mutate an integer vector GA individual.
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* \param ioIndividual GA individual to mutate.
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* \param ioContext Context of the evolution.
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* \return True if the individual is effectively mutated, false if not.
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*/
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bool GA::MutationShuffleIntVecOp::mutate(Beagle::Individual& ioIndividual, Context& ioContext)
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{
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Beagle_StackTraceBeginM();
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Beagle_ValidateParameterM(mIntMutateProba->getWrappedValue()>=0.0, mIntMutatePbName, "<0");
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bool lMutated = false;
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Beagle_LogVerboseM(
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ioContext.getSystem().getLogger(),
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"mutation", "Beagle::GA::MutationShuffleIntVecOp",
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string("Integer shuffle mutation probability is: ")+
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dbl2str(mIntMutateProba->getWrappedValue())
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);
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for(unsigned int i=0; i<ioIndividual.size(); i++) {
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GA::IntegerVector::Handle lIV = castHandleT<GA::IntegerVector>(ioIndividual[i]);
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if(lIV->size() <= 2) continue;
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Beagle_LogVerboseM(
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ioContext.getSystem().getLogger(),
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"mutation", "Beagle::GA::MutationShuffleIntVecOp",
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string("Shuffle mutating the ")+uint2ordinal(i+1)+" integer vector"
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);
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Beagle_LogDebugM(
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ioContext.getSystem().getLogger(),
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"mutation", "Beagle::GA::MutationShuffleIntVecOp",
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string("The integer vector before GA shuffle mutation: ")+lIV->serialize()
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);
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for(unsigned int j=0; j<lIV->size(); j++) {
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double lRolledPb = ioContext.getSystem().getRandomizer().rollUniform();
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if(lRolledPb <= mIntMutateProba->getWrappedValue()) {
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unsigned int lSwapIndex =
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ioContext.getSystem().getRandomizer().rollInteger(0, lIV->size()-2);
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if(lSwapIndex >= j) ++lSwapIndex;
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const int lTmpVal = (*lIV)[lSwapIndex];
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(*lIV)[lSwapIndex] = (*lIV)[j];
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(*lIV)[j] = lTmpVal;
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lMutated = true;
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}
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}
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if(lMutated) {
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Beagle_LogVerboseM(
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ioContext.getSystem().getLogger(),
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"mutation", "Beagle::GA::MutationShuffleIntVecOp",
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string("The integer vector has been shuffle mutated")
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);
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Beagle_LogDebugM(
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ioContext.getSystem().getLogger(),
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"mutation", "Beagle::GA::MutationShuffleIntVecOp",
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string("The integer vector after GA shuffle mutation: ")+lIV->serialize()
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);
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}
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else {
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Beagle_LogVerboseM(
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ioContext.getSystem().getLogger(),
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"mutation", "Beagle::GA::MutationShuffleIntVecOp",
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string("The integer vector has not been mutated")
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);
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}
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}
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return lMutated;
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Beagle_StackTraceEndM("bool GA::MutationShuffleIntVecOp::mutate(Beagle::Individual& ioIndividual, Context& ioContext)");
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}
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/*!
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* \brief Read a shuffle mutation operator from XML subtree.
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* \param inIter XML iterator to use to read mutation operator.
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* \param inOpMap Operator map to use to read mutation operator.
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*/
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void GA::MutationShuffleIntVecOp::readWithMap(PACC::XML::ConstIterator inIter, OperatorMap& inOpMap)
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{
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Beagle_StackTraceBeginM();
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if((inIter->getType()!=PACC::XML::eData) || (inIter->getValue()!=getName().c_str())) {
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std::ostringstream lOSS;
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lOSS << "tag <" << getName() << "> expected!" << std::flush;
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throw Beagle_IOExceptionNodeM(*inIter, lOSS.str().c_str());
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}
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string lMutationPbReadName = inIter->getAttribute("mutationpb").c_str();
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if(lMutationPbReadName.empty() == false) mMutationPbName = lMutationPbReadName;
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string lIntMutatePbReadName = inIter->getAttribute("mutintpb").c_str();
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if(lIntMutatePbReadName.empty() == false) mIntMutatePbName = lIntMutatePbReadName;
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Beagle_StackTraceEndM("void GA::MutationShuffleIntVecOp::readWithMap(PACC::XML::ConstIterator inIter, OperatorMap& inOpMap)");
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}
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/*!
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* \brief Write shuffle mutation operator into XML streamer.
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* \param ioStreamer XML streamer to write mutation operator into.
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* \param inIndent Whether XML output should be indented.
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*/
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void GA::MutationShuffleIntVecOp::writeContent(PACC::XML::Streamer& ioStreamer, bool inIndent) const
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{
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Beagle_StackTraceBeginM();
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Beagle::MutationOp::writeContent(ioStreamer, inIndent);
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ioStreamer.insertAttribute("mutintpb", mIntMutatePbName);
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Beagle_StackTraceEndM("void GA::MutationShuffleIntVecOp::writeContent(PACC::XML::Streamer& ioStreamer, bool inIndent) const");
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}
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