Examples of TournamentSelection

com.heatonresearch.aifh.evolutionary.opp.selection.TournamentSelection
kipedia.org/wiki/Tournament_selection
org.apache.commons.math3.genetics.TournamentSelection
Tournament selection scheme. Each of the two selected chromosomes is selected based on n-ary tournament -- this is done by drawing {@link #arity} randomchromosomes without replacement from the population, and then selecting the fittest chromosome among them. @since 2.0
org.encog.ml.ea.opp.selection.TournamentSelection
kipedia.org/wiki/Tournament_selection
org.uncommons.watchmaker.framework.selection.TournamentSelection
Selection strategy that picks a pair of candidates at random and then selects the fitter of the two candidates with probability p, where p is the configured selection probability (therefore the probability of the less fit candidate being selected is 1 - p). @author Daniel Dyer

Examples of com.heatonresearch.aifh.evolutionary.opp.selection.TournamentSelection

    public BasicEA(final Population thePopulation,
                   final ScoreFunction theScoreFunction) {


        this.population = thePopulation;
        this.scoreFunction = theScoreFunction;
        this.selection = new TournamentSelection(this, 4);


        // set the score compare method
        if (theScoreFunction.shouldMinimize()) {
            this.selectionComparator = new MinimizeAdjustedScoreComp();
            this.bestComparator = new MinimizeScoreComp();

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Examples of com.heatonresearch.aifh.evolutionary.opp.selection.TournamentSelection

            }
        });


        // Perform the test for round counts between 1 and 10.
        for (int roundCount = 1; roundCount <= 10; roundCount++) {
            TournamentSelection selection = new TournamentSelection(train, roundCount);
            int sum = 0;
            int count = 0;
            for (int i = 0; i < 100000; i++) {
                int genomeID = selection.performSelection(rnd, species);
                Genome genome = species.getMembers().get(genomeID);
                sum += genome.getAdjustedScore();
                count++;
            }
            sum /= count;

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Examples of org.apache.commons.math3.genetics.TournamentSelection

        long startTime = System.currentTimeMillis();


        // initialize a new genetic algorithm
        GeneticAlgorithm ga = new GeneticAlgorithm(new OnePointCrossover<Character>(), CROSSOVER_RATE,
                                                   new RandomCharacterMutation(), MUTATION_RATE,
                                                   new TournamentSelection(TOURNAMENT_ARITY));


        // initial population
        Population initial = getInitialPopulation();


        // stopping condition

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Examples of org.apache.commons.math3.genetics.TournamentSelection

            });


            // initialize a new genetic algorithm
            ga = new GeneticAlgorithm(new UniformCrossover<Polygon>(0.5), 1.0,
                                      new RandomPolygonMutation(MUTATION_RATE, MUTATION_CHANGE), 1.0,
                                      new TournamentSelection(TOURNAMENT_ARITY));


            // initial population
            currentPopulation = getInitialPopulation();
            bestFit = currentPopulation.getFittestChromosome();
        }

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Examples of org.encog.ml.ea.opp.selection.TournamentSelection

  public BasicEA(final Population thePopulation,
      final CalculateScore theScoreFunction) {


    this.population = thePopulation;
    this.scoreFunction = theScoreFunction;
    this.selection = new TournamentSelection(this, 4);
    this.rules = new BasicRuleHolder();


    // set the score compare method
    if (theScoreFunction.shouldMinimize()) {
      this.selectionComparator = new MinimizeAdjustedScoreComp();

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Examples of org.uncommons.watchmaker.framework.selection.TournamentSelection

      selectionLabel = new JLabel("Selection Strategy: ");
      innerPanel.add(selectionLabel);
      
      SelectionStrategy<?>[] selectionStrategies = {new RankSelection(), new RouletteWheelSelection(),
                                                    new StochasticUniversalSampling(),
                                                    new TournamentSelection(new Probability(0.95)),
                                                    new TruncationSelection(0.5)};
      
      selectionCombo = new JComboBox(selectionStrategies);
      selectionCombo.setRenderer(new DefaultListCellRenderer() {
        @Override

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Examples of org.uncommons.watchmaker.framework.selection.TournamentSelection

      selectionLabel = new JLabel("Selection Strategy: ");
      innerPanel.add(selectionLabel);
      
      SelectionStrategy<?>[] selectionStrategies = {new RankSelection(), new RouletteWheelSelection(),
                                                    new StochasticUniversalSampling(),
                                                    new TournamentSelection(new Probability(0.95)),
                                                    new TruncationSelection(0.5)};
      
      selectionCombo = new JComboBox(selectionStrategies);
      selectionCombo.setRenderer(new DefaultListCellRenderer() {
        @Override

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Examples of org.uncommons.watchmaker.framework.selection.TournamentSelection

      selectionLabel = new JLabel("Selection Strategy: ");
      innerPanel.add(selectionLabel);


      SelectionStrategy<?>[] selectionStrategies = {
          new RankSelection(), new RouletteWheelSelection(),
          new StochasticUniversalSampling(), new TournamentSelection(new Probability(0.95d)),
          new TruncationSelection(0.5d)};


      selectionCombo = new JComboBox(selectionStrategies);
      selectionCombo.setRenderer(new DefaultListCellRenderer() {
        @Override

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Examples of org.uncommons.watchmaker.framework.selection.TournamentSelection

      selectionLabel = new JLabel("Selection Strategy: ");
      innerPanel.add(selectionLabel);


      SelectionStrategy<?>[] selectionStrategies = {
          new RankSelection(), new RouletteWheelSelection(),
          new StochasticUniversalSampling(), new TournamentSelection(new Probability(0.95)),
          new TruncationSelection(0.5)};


      selectionCombo = new JComboBox(selectionStrategies);
      selectionCombo.setRenderer(new DefaultListCellRenderer() {
        @Override

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Examples of org.uncommons.watchmaker.framework.selection.TournamentSelection

        List<SelectionStrategy<? super T>> options = new LinkedList<SelectionStrategy<? super T>>();
        options.add(new RankSelection());
        options.add(new RouletteWheelSelection());
        options.add(new SigmaScaling());
        options.add(new StochasticUniversalSampling());
        options.add(new TournamentSelection(tournamentProbability));
        options.add(new TruncationSelection(truncationRatio));
        return options;
    }

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