COSC-4P82-Final-Project/lib/beagle-3.0.3/beagle/GA/src/MutationShuffleIntVecOp.cpp

202 lines
7.5 KiB
C++

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