1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * https://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 /*
19 * This is not the original file distributed by the Apache Software Foundation
20 * It has been modified by the Hipparchus project
21 */
22 package org.hipparchus.clustering;
23
24 /**
25 * A Cluster used by centroid-based clustering algorithms.
26 * <p>
27 * Defines additionally a cluster center which may not necessarily be a member
28 * of the original data set.
29 *
30 * @param <T> the type of points that can be clustered
31 */
32 public class CentroidCluster<T extends Clusterable> extends Cluster<T> {
33
34 /** Serializable version identifier. */
35 private static final long serialVersionUID = -3075288519071812288L;
36
37 /** Center of the cluster. */
38 private final Clusterable center;
39
40 /**
41 * Build a cluster centered at a specified point.
42 * @param center the point which is to be the center of this cluster
43 */
44 public CentroidCluster(final Clusterable center) {
45 super();
46 this.center = center;
47 }
48
49 /**
50 * Get the point chosen to be the center of this cluster.
51 * @return chosen cluster center
52 */
53 public Clusterable getCenter() {
54 return center;
55 }
56
57 }