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NSGAIIMeasures.java
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NSGAIIMeasures.java
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package org.uma.jmetal.algorithm.multiobjective.nsgaii.jmetal5version;
import org.uma.jmetal.operator.crossover.CrossoverOperator;
import org.uma.jmetal.operator.mutation.MutationOperator;
import org.uma.jmetal.operator.selection.SelectionOperator;
import org.uma.jmetal.problem.Problem;
import org.uma.jmetal.qualityindicator.impl.hypervolume.impl.PISAHypervolume;
import org.uma.jmetal.solution.Solution;
import org.uma.jmetal.util.SolutionListUtils;
import org.uma.jmetal.util.evaluator.SolutionListEvaluator;
import org.uma.jmetal.util.front.Front;
import org.uma.jmetal.util.front.impl.ArrayFront;
import org.uma.jmetal.util.measure.Measurable;
import org.uma.jmetal.util.measure.MeasureManager;
import org.uma.jmetal.util.measure.impl.BasicMeasure;
import org.uma.jmetal.util.measure.impl.CountingMeasure;
import org.uma.jmetal.util.measure.impl.DurationMeasure;
import org.uma.jmetal.util.measure.impl.SimpleMeasureManager;
import org.uma.jmetal.util.solutionattribute.Ranking;
import org.uma.jmetal.util.solutionattribute.impl.DominanceRanking;
import java.util.Comparator;
import java.util.List;
/**
* @author Antonio J. Nebro <antonio@lcc.uma.es>
*/
@SuppressWarnings("serial")
public class NSGAIIMeasures<S extends Solution<?>> extends NSGAII<S> implements Measurable {
protected CountingMeasure evaluations ;
protected DurationMeasure durationMeasure ;
protected SimpleMeasureManager measureManager ;
protected BasicMeasure<List<S>> solutionListMeasure ;
protected BasicMeasure<Integer> numberOfNonDominatedSolutionsInPopulation ;
protected BasicMeasure<Double> hypervolumeValue ;
protected Front referenceFront ;
/**
* Constructor
*/
public NSGAIIMeasures(Problem<S> problem, int maxIterations, int populationSize,
int matingPoolSize, int offspringPopulationSize,
CrossoverOperator<S> crossoverOperator, MutationOperator<S> mutationOperator,
SelectionOperator<List<S>, S> selectionOperator, Comparator<S> dominanceComparator, SolutionListEvaluator<S> evaluator) {
super(problem, maxIterations, populationSize, matingPoolSize, offspringPopulationSize,
crossoverOperator, mutationOperator, selectionOperator, dominanceComparator, evaluator) ;
referenceFront = new ArrayFront() ;
initMeasures() ;
}
@Override protected void initProgress() {
evaluations.reset(getMaxPopulationSize());
}
@Override protected void updateProgress() {
evaluations.increment(getMaxPopulationSize());
solutionListMeasure.push(getPopulation());
if (referenceFront.getNumberOfPoints() > 0) {
hypervolumeValue.push(
new PISAHypervolume<S>(referenceFront).evaluate(
SolutionListUtils.getNonDominatedSolutions(getPopulation())));
}
}
@Override protected boolean isStoppingConditionReached() {
return evaluations.get() >= maxEvaluations;
}
@Override
public void run() {
durationMeasure.reset();
durationMeasure.start();
super.run();
durationMeasure.stop();
}
/* Measures code */
private void initMeasures() {
durationMeasure = new DurationMeasure() ;
evaluations = new CountingMeasure(0) ;
numberOfNonDominatedSolutionsInPopulation = new BasicMeasure<>() ;
solutionListMeasure = new BasicMeasure<>() ;
hypervolumeValue = new BasicMeasure<>() ;
measureManager = new SimpleMeasureManager() ;
measureManager.setPullMeasure("currentExecutionTime", durationMeasure);
measureManager.setPullMeasure("currentEvaluation", evaluations);
measureManager.setPullMeasure("numberOfNonDominatedSolutionsInPopulation",
numberOfNonDominatedSolutionsInPopulation);
measureManager.setPushMeasure("currentPopulation", solutionListMeasure);
measureManager.setPushMeasure("currentEvaluation", evaluations);
measureManager.setPushMeasure("hypervolume", hypervolumeValue);
}
@Override
public MeasureManager getMeasureManager() {
return measureManager ;
}
@Override protected List<S> replacement(List<S> population,
List<S> offspringPopulation) {
List<S> pop = super.replacement(population, offspringPopulation) ;
Ranking<S> ranking = new DominanceRanking<S>(dominanceComparator);
ranking.computeRanking(population);
numberOfNonDominatedSolutionsInPopulation.set(ranking.getSubFront(0).size());
return pop;
}
public CountingMeasure getEvaluations() {
return evaluations;
}
@Override public String getName() {
return "NSGAIIM" ;
}
@Override public String getDescription() {
return "Nondominated Sorting Genetic Algorithm version II. Version using measures" ;
}
public void setReferenceFront(Front referenceFront) {
this.referenceFront = referenceFront ;
}
}