/*
* Encog(tm) Core v3.4 - Java Version
* http://www.heatonresearch.com/encog/
* https://github.com/encog/encog-java-core
* Copyright 2008-2016 Heaton Research, Inc.
*
* 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.
*
* For more information on Heaton Research copyrights, licenses
* and trademarks visit:
* http://www.heatonresearch.com/copyright
*/
package org.encog.util.kmeans;
import java.util.ArrayList;
import java.util.List;
/**
* A cluster.
* @param <T> The type of data to cluster.
*/
public class Cluster<T extends CentroidFactory<? super T>>
{
/**
* The contents of the cluster.
*/
final private List<T> contents = new ArrayList<T>();
/**
* The centroid of this cluster.
*/
private Centroid<? super T> centroid;
/**
* Create an empty cluster.
*/
public Cluster()
{
}
/**
* Create a cluster with one initial data point.
* @param d The initial data point.
*/
public Cluster(T d)
{
contents.add(d);
centroid = d.createCentroid();
}
/**
* @return The contents of this cluster.
*/
public List<T> getContents()
{
return this.contents;
}
/**
* Add a element to the cluster.
* @param e The element to add.
*/
public void add(T e)
{
if (centroid == null)
centroid = e.createCentroid();
else
centroid.add(e);
this.contents.add(e);
}
/**
* Remove the specified index from the cluster.
* @param i The index to remove.
*/
public void remove(int i)
{
centroid.remove(this.contents.get(i) );
this.contents.remove(i);
}
/**
* @return The centroid of this cluster.
*/
public Centroid<? super T> centroid()
{
return centroid;
}
}