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Agglomerative hierarchical clustering analysis and visualization implemented in Java

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/*******************************************************************************
 * Copyright 2013 Lars Behnke
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.apporiented.algorithm.clustering;

import java.util.Collection;

public class CompleteLinkageStrategy implements LinkageStrategy {

	@Override
	public Distance calculateDistance(Collection distances) {
		double max = Double.NaN;

		for (Distance dist : distances) {
		    if (Double.isNaN(max) || dist.getDistance() > max)
		        max = dist.getDistance();
		}
		return new Distance(max);
	}
}