trains Cobweb incrementally on data obtained from the ArffLoader. - Java Machine Learning AI

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Description

trains Cobweb incrementally on data obtained from the ArffLoader.

Demo Code



import weka.core.Instance;
import weka.core.Instances;
import weka.core.converters.ArffLoader;
import weka.clusterers.Cobweb;

import java.io.File;

/**/* w  ww .j  a  v  a2s  . c om*/
 * This example trains Cobweb incrementally on data obtained
 * from the ArffLoader.
 *
 * @author FracPete (fracpete at waikato dot ac dot nz)
 */
public class IncrementalClusterer {

    /**
     * Expects an ARFF file as first argument.
     *
     * @param args        the commandline arguments
     * @throws Exception  if something goes wrong
     */
    public static void main(String[] args) throws Exception {
        // load data
        ArffLoader loader = new ArffLoader();
        loader.setFile(new File(args[0]));
        Instances structure = loader.getStructure();

        // train Cobweb
        Cobweb cw = new Cobweb();
        cw.buildClusterer(structure);
        Instance current;
        while ((current = loader.getNextInstance(structure)) != null)
            cw.updateClusterer(current);
        cw.updateFinished();

        // output generated model
        System.out.println(cw);
    }
}

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