120 lines
2.4 KiB
C++
120 lines
2.4 KiB
C++
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#include <iostream>
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#include <eoScalarFitness.h>
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#include <eoVector.h>
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#include <eoPop.h>
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#include <utils/eoParser.h>
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#include <utils/eoCheckPoint.h>
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#include <eoEvalFuncPtr.h>
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#include <eoGenContinue.h>
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#include <eoFitContinue.h>
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#include <utils/eoStdoutMonitor.h>
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#include <utils/eoStat.h>
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#include <utils/eoTimedMonitor.h>
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#include <eoMergeReduce.h>
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#include <eoEasyEA.h>
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#include <es/CMAState.h>
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#include <es/CMAParams.h>
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#include <es/eoCMAInit.h>
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#include <es/eoCMABreed.h>
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using namespace eo;
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using namespace std;
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typedef eoMinimizingFitness FitT;
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typedef eoVector<FitT, double> EoType;
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double sqr(double x) { return x*x; }
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eoValueParam<int> evals(0,"Function Evals","Number of Evaluations");
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double f_sphere(const vector<double>& values) {
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double sum = 0.0;
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for (unsigned i = 0; i < values.size(); ++i) {
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sum += values[i] * values[i];
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}
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++evals.value();
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return sum;
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}
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double f_rosen(const vector<double>& x) {
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double sum =0.0;
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for (int i = 0; i < x.size()-1; ++i) {
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sum += 100 * sqr(sqr(x[i])-x[i+1]) + sqr(1.-x[i]);
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}
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++evals.value();
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return sum;
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}
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int main(int argc, char* argv[]) {
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eoParser parser(argc, argv);
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CMAParams params(parser);
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vector<double> initial_point(params.n, 0.0);
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CMAState state(params, initial_point);
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if (parser.userNeedsHelp())
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{
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parser.printHelp(std::cout);
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return 1;
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}
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eoCMAInit<FitT> init(state);
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eoPop<EoType> pop(params.mu, init);
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eoEvalFuncPtr<EoType, double, const vector<double>&> eval( f_rosen );
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eoCMABreed<FitT> breed(state, params.lambda);
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for (unsigned i = 0; i < pop.size(); ++i) {
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eval(pop[i]);
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}
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eoCommaReplacement<EoType> comma;
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eoGenContinue<EoType> gen(params.maxgen);
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eoFitContinue<EoType> fit(1e-10);
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eoCheckPoint<EoType> checkpoint(gen);
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checkpoint.add(fit);
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eoBestFitnessStat<EoType> stat;
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eoStdoutMonitor mon;
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mon.add(stat);
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mon.add(evals);
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eoTimedMonitor timed(1);// 1 seconds
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timed.add(mon); // wrap it
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checkpoint.add(timed);
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checkpoint.add(stat);
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eoEasyEA<EoType> algo(
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checkpoint,
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eval,
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breed,
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comma);
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algo(pop);
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pop.sort();
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cout << pop[0] << endl;
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cout << "Fitness achieved = " << pop[0].fitness() << endl;
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cout << "Function evaluations = " << evals.value() << endl;
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}
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