public static void main(String[] args) throws Exception {
CrossoverOperator<BinarySolution> crossoverOperator;
MutationOperator<BinarySolution> mutationOperator;
SelectionOperator<List<BinarySolution>, BinarySolution> parentsSelection;
SelectionOperator<List<BinarySolution>, List<BinarySolution>> newGenerationSelection;
Algorithm<List<BinarySolution>> algorithm;
BinaryProblem problem;
String problemName;
if (args.length == 1) {
problemName = args[0];
} else {
problemName = "org.uma.jmetal.problem.multiobjective.zdt.ZDT5";
}
problem = (BinaryProblem) ProblemUtils.<BinarySolution>loadProblem(problemName);
crossoverOperator = new HUXCrossover(1.0);
parentsSelection = new RandomSelection<BinarySolution>();
newGenerationSelection = new RankingAndCrowdingSelection<BinarySolution>(100);
mutationOperator = new BitFlipMutation(0.35);
algorithm =
new MOCHCBuilder(problem)
.setInitialConvergenceCount(0.25)
.setConvergenceValue(3)
.setPreservedPopulation(0.05)
.setPopulationSize(100)
.setMaxEvaluations(25000)
.setCrossover(crossoverOperator)
.setNewGenerationSelection(newGenerationSelection)
.setCataclysmicMutation(mutationOperator)
.setParentSelection(parentsSelection)
.setEvaluator(new SequentialSolutionListEvaluator<BinarySolution>())
.build();
AlgorithmRunner algorithmRunner = new AlgorithmRunner.Executor(algorithm).execute();
List<BinarySolution> population = ((MOCHC) algorithm).getResult();
long computingTime = algorithmRunner.getComputingTime();
new SolutionSetOutput.Printer(population)
.setSeparator("\t")
.setVarFileOutputContext(new DefaultFileOutputContext("VAR.tsv"))
.setFunFileOutputContext(new DefaultFileOutputContext("FUN.tsv"))
.print();
JMetalLogger.logger.info("Total execution time: " + computingTime + "ms");
JMetalLogger.logger.info("Objectives values have been written to file FUN.tsv");
JMetalLogger.logger.info("Variables values have been written to file VAR.tsv");
}
public static void singleRun(String pro, String referencePareto) {
Problem<DoubleSolution> problem;
Algorithm<List<DoubleSolution>> algorithm;
CrossoverOperator<DoubleSolution> crossover;
MutationOperator<DoubleSolution> mutation;
SelectionOperator<List<DoubleSolution>, DoubleSolution> selection;
String referenceParetoFront = "";
String problemName;
if (!pro.isEmpty()
&& !referencePareto.isEmpty()
&& pro.trim() != null
&& referencePareto.trim() != null) {
problemName = pro;
referenceParetoFront = referencePareto;
} else {
problemName = "problem.multiobjective.zdt.ZDT1";
referenceParetoFront = "problem/src/test/resources/pareto_fronts/ZDT1.pf";
}
problem = ProblemUtils.<DoubleSolution>loadProblem(problemName);
int iterations;
String mobi;
if (problem.getNumberOfObjectives() == 2) {
iterations = 300;
mobi = "mombi2-weights/weight/weight_02D_152.sld";
} else {
iterations = 500;
mobi = "mombi2-weights/weight/weight_03D_12.sld";
}
double crossoverProbability = 0.9;
double crossoverDistributionIndex = 20.0;
crossover = new SBXCrossover(crossoverProbability, crossoverDistributionIndex);
double mutationProbability = 1.0 / problem.getNumberOfVariables();
double mutationDistributionIndex = 20.0;
mutation = new PolynomialMutation(mutationProbability, mutationDistributionIndex);
selection =
new BinaryTournamentSelection<DoubleSolution>(
new RankingAndCrowdingDistanceComparator<DoubleSolution>());
algorithm =
new MOMBI2<>(
problem,
iterations,
crossover,
mutation,
selection,
new SequentialSolutionListEvaluator<DoubleSolution>(),
mobi);
AlgorithmRunner algorithmRunner = new AlgorithmRunner.Executor(algorithm).execute();
List<DoubleSolution> population = algorithm.getResult();
long computingTime = algorithmRunner.getComputingTime();
JMetalLogger.logger.info("Total execution time: " + computingTime + "ms");
printFinalSolutionSet(population);
if (!referenceParetoFront.equals("")) {
printQualityIndicators(population, referenceParetoFront);
}
}