hyperheuristics.algorithm.moeadfrrmab.UCBSelectorVariance.java Source code

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Here is the source code for hyperheuristics.algorithm.moeadfrrmab.UCBSelectorVariance.java

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package hyperheuristics.algorithm.moeadfrrmab;

import hyperheuristics.lowlevelheuristic.LowLevelHeuristic;
import java.util.ArrayList;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.math3.stat.descriptive.moment.Variance;

/**
 *
 * @author vinicius
 */
public class UCBSelectorVariance extends UCBSelector {

    private SlidingWindow slidingwindow;

    public UCBSelectorVariance(ArrayList<LowLevelHeuristic> operators, double C, SlidingWindow slidingwindow) {
        super(operators, C);
        this.slidingwindow = slidingwindow;
    }

    protected double calcVariance(String op) {
        ArrayList<String[]> slOp = slidingwindow.getWindowforOp(op);
        if (slOp.size() > 1) {
            ArrayList<Double> values = new ArrayList<>();
            for (int i = 0; i < slOp.size(); i++) {
                String[] data = slOp.get(i);
                double FIR = Double.valueOf(data[1]);
                values.add(FIR);
            }
            double[] arr = ArrayUtils.toPrimitive(values.toArray(new Double[0]));
            return this.calcVariance(arr);
        }
        return 1.0;
    }

    protected double calcVariance(double[] values) {
        Variance variancia = new Variance();
        return variancia.evaluate(values);
    }

}