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/*
 * Encog(tm) Core v3.4 - Java Version
 * http://www.heatonresearch.com/encog/
 * https://github.com/encog/encog-java-core
 
 * Copyright 2008-2017 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.ml;


/**
 * A machine learning method that is used to break data into clusters.  The 
 * number of clusters is usually defined beforehand.  This differs from 
 * the MLClassification method in that the data is clustered as an entire 
 * group.  If additional data must be clustered later, the entire group 
 * must be reclustered.
 */
public interface MLClustering extends MLMethod {
	
	/**
	 * Perform the training iteration.
	 */
	void iteration();
	
	/**
	 * Perform the specified number of training iterations.
	 * @param count The number of training iterations.
	 */
	void iteration(final int count);
	
	/**
	 * @return The clusters.
	 */
	MLCluster[] getClusters();

	/**
	 * @return The number of clusters.
	 */
	int numClusters();
}