CanopyExample.java

/*
 * Source code for Listing 9.3
 * 
 */
package mia.clustering.ch09;

import java.util.ArrayList;
import java.util.List;

import org.apache.mahout.clustering.canopy.Canopy;
import org.apache.mahout.clustering.canopy.CanopyClusterer;
import org.apache.mahout.common.distance.EuclideanDistanceMeasure;
import org.apache.mahout.math.Vector;

public class CanopyExample {

	public static void main(String[] args) {
		List<Vector> sampleData = new ArrayList<Vector>();

		RandomPointsUtil.generateSamples(sampleData, 400, 1, 1, 2);
		RandomPointsUtil.generateSamples(sampleData, 300, 1, 0, 0.5);
		RandomPointsUtil.generateSamples(sampleData, 300, 0, 2, 0.1);

		List<Canopy> canopies = CanopyClusterer.createCanopies(sampleData,
				new EuclideanDistanceMeasure(), 3.0, 1.5);

		for (Canopy canopy : canopies) {
			System.out.println("Canopy id: " + canopy.getId() + " center: "
					+ canopy.getCenter().asFormatString());
		}
	}
}