distributions.NumericDistribution.java Source code

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Here is the source code for distributions.NumericDistribution.java

Source

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package distributions;

import mathematik.Discretisierer;
import weka.core.Instance;
import weka.core.Instances;

/**
 *
 * @author Thierry
 */
public class NumericDistribution extends Discretisierer implements Distribution {

    protected Instances inst;
    protected int kID;
    protected int pID;
    protected double[] attwerten;
    private double[] probs;

    public NumericDistribution(Instances inst, int kID) {

        this.inst = new Instances(inst);
        this.kID = kID;
        attwerten = new double[inst.numAttributes()];
        for (int i = 0, j = 0; i < attwerten.length && j < inst.numInstances(); i++, j++) {
            attwerten[i] = inst.instance(j).value(kID);
        }

        attwerten = super.EliminiereDopelt(attwerten);
        /* for (int k = 0; k < inst.numInstances(); k++) {
        attwerten[(int) inst.instance(k).value(kID)] = inst.instance(k).value(kID);
         }*/

        probs = new double[attwerten.length];

    }

    @Override
    public void calculateProbs() {

        for (int j = 0; j < attwerten.length; j++) {
            for (int i = 0; i < inst.numInstances(); i++) {
                if ((inst.instance(i).value(kID)) == (attwerten[j])) {
                    probs[j]++;
                }
            }
        }
        for (int i = 0; i < probs.length; i++) {
            if (inst.numInstances() != 0) {
                probs[i] /= inst.numInstances();
            }
        }

    }

    @Override
    public <Object> double getProbs(Object insta) {
        calculateProbs();
        int a = (int) ((Instance) insta).value(kID);
        if (a < attwerten.length)

        {
            return probs[a];
        }
        return 0;

    }

    @Override
    public double[][] numberOfcounts() {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
}