00001 #include "ECF_base.h"
00002 #include "ECF_derived.h"
00003 #include <string>
00004 #include <sstream>
00005
00006
00007 HallOfFame::HallOfFame()
00008 {
00009 this->selectBest_ = static_cast<SelBestOpP> (new SelBestOp);
00010 hofSize_ = 1;
00011 }
00012
00013
00014 bool HallOfFame::initialize(StateP state)
00015 {
00016 state_ = state;
00017 bestIndividuals_.resize(hofSize_);
00018 bestGenerations_.resize(hofSize_);
00019 bEmpty_ = true;
00020 lastChangeGen_ = 0;
00021
00022 return true;
00023 }
00024
00025
00026 bool HallOfFame::operate(StateP state)
00027 {
00028 PopulationP population = state->getPopulation();
00029
00030 for(uint i = 0; i < population->size(); i++) {
00031 operate(*(population->at(i)));
00032 }
00033 return true;
00034 }
00035
00036
00037 bool HallOfFame::operate(const std::vector<IndividualP>& individuals)
00038 {
00039 uint ind = 0;
00040 IndividualP best;
00041
00042 while (ind < hofSize_) {
00043 best = selectBest_->select(individuals);
00044
00045
00046 if(bEmpty_ || best->fitness->isBetterThan(bestIndividuals_[ind]->fitness)) {
00047
00048 bestIndividuals_[ind] = (IndividualP) best->copy();
00049 bestGenerations_[ind] = state_->getGenerationNo();
00050 bEmpty_ = false;
00051 lastChangeGen_ = state_->getGenerationNo();
00052 }
00053 ++ind;
00054 }
00055
00056 return true;
00057 }
00058
00059
00060 void HallOfFame::write(XMLNode& xHoF)
00061 {
00062 xHoF = XMLNode::createXMLTopNode("HallOfFame");
00063 std::stringstream sValue;
00064 sValue << this->hofSize_;
00065 xHoF.addAttribute("size", uint2str(hofSize_).c_str());
00066
00067 XMLNode xInd;
00068 for(uint i = 0; i < hofSize_; i++) {
00069 bestIndividuals_[i]->write(xInd);
00070 xInd.addAttribute("gen", uint2str(bestGenerations_[i]).c_str());
00071 xHoF.addChild(xInd);
00072 }
00073 }
00074
00075
00076 void HallOfFame::read(XMLNode& xHof)
00077 {
00078 std::stringstream ss;
00079 ss << xHof.getAttribute("size");
00080 ss >> hofSize_;
00081 ss.clear(); ss.str("");
00082
00083 bestIndividuals_.resize(hofSize_);
00084 bestGenerations_.resize(hofSize_);
00085 bEmpty_ = false;
00086 lastChangeGen_ = 0;
00087
00088 XMLNode xInd;
00089 for(uint i = 0; i < hofSize_; i++) {
00090 xInd = xHof.getChildNode(i);
00091 ss << xInd.getAttribute("gen");
00092 ss >> bestGenerations_[i];
00093 ss.clear(); ss.str("");
00094 bestIndividuals_[i] = (IndividualP) state_->getIndividualObject()->copy();
00095 bestIndividuals_[i]->read(xInd);
00096
00097 if(lastChangeGen_ < bestGenerations_[i])
00098 lastChangeGen_ = bestGenerations_[i];
00099 }
00100 }
