lu.lippmann.cdb.ext.hydviga.util.TransformTimeSeries.java Source code

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Here is the source code for lu.lippmann.cdb.ext.hydviga.util.TransformTimeSeries.java

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/**
 * Copyright 2014-2016 LIST (Luxembourg Institute of Science and Technology), all right reserved.
 * Authorship : Olivier PARISOT, Yoanne DIDRY
 * Licensed under GNU General Public License version 3
 */
package lu.lippmann.cdb.ext.hydviga.util;

import java.io.File;
import weka.core.*;
import lu.lippmann.cdb.weka.WekaDataAccessUtil;

/**
 * TransformTimeSeries.
 * 
 * @author
 */
public class TransformTimeSeries {
    /**
     * Main method.
     * @param args command line arguments
     */
    public static final void main(final String[] args) {
        try {
            final Instances dataSet = WekaDataAccessUtil.loadInstancesFromARFFOrCSVFile(new File("."
                    + File.separatorChar + "data_fake" + File.separatorChar + "all_valid_q_series_complete2.arff"));
            System.out.println(dataSet.toSummaryString());

            final int numAttributes = dataSet.numAttributes();
            final int numInstances = dataSet.numInstances();
            for (int i = 0; i < numAttributes; i++) {
                final int i_bis = (int) (Math.random() * (double) (numAttributes - 3));
                final int i_tri = (int) (Math.random() * (double) (numAttributes - 3));

                for (int j = 0; j < numInstances; j++) {
                    final Instance instance_j = dataSet.instance(j);

                    if (instance_j.isMissing(i))
                        continue;
                    if (instance_j.isMissing(i_bis))
                        continue;
                    if (instance_j.isMissing(i_tri))
                        continue;

                    final double iValue = instance_j.value(i);
                    final double iBisValue = instance_j.value(i_bis);
                    final double iTriValue = instance_j.value(i_tri);

                    instance_j.setValue(i, (iValue + iBisValue + iTriValue));
                }
            }

            WekaDataAccessUtil.saveInstancesIntoARFFFile(dataSet, new File("." + File.separatorChar + "data_fake"
                    + File.separatorChar + "all_valid_q_series_complete2_fake.arff"));
        } catch (final Exception e) {
            e.printStackTrace();
        }
    }
}