br.unicamp.ic.recod.gpsi.measures.gpsiDistanceOfMediansScore.java Source code

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Here is the source code for br.unicamp.ic.recod.gpsi.measures.gpsiDistanceOfMediansScore.java

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package br.unicamp.ic.recod.gpsi.measures;

import org.apache.commons.math3.linear.MatrixUtils;
import org.apache.commons.math3.linear.RealMatrix;
import org.apache.commons.math3.stat.descriptive.rank.Median;

/**
 * Works only in one dimension
 * @author juan
 */
public class gpsiDistanceOfMediansScore implements gpsiSampleSeparationScore {

    @Override
    public double score(double[][][] input) {

        Median median = new Median();

        RealMatrix matrix0 = MatrixUtils.createRealMatrix(input[0]);
        RealMatrix matrix1 = MatrixUtils.createRealMatrix(input[1]);

        return Math.abs(median.evaluate(matrix0.getColumn(0)) - median.evaluate(matrix1.getColumn(0)));

    }

}