/*
* RapidMiner
*
* Copyright (C) 2001-2008 by Rapid-I and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapid-i.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.operator.learner.clustering.hierarchical.upgma;
public class AverageClusterDistanceMeasure implements ClusterDistanceMeasure {
public double calculateUnionDistance(double distanceLI, double distanceLJ, Cluster clusterI, Cluster clusterJ, Cluster clusterL) {
return (distanceLI * clusterI.size() + distanceLJ * clusterJ.size()) / (clusterI.size() + clusterJ.size());
}
}