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 * http://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 package org.apache.commons.math4.neuralnet.sofm; 19 20 import java.util.Iterator; 21 22 import org.apache.commons.math4.neuralnet.Network; 23 24 /** 25 * Trainer for Kohonen's Self-Organizing Map. 26 * 27 * @since 3.3 28 */ 29 public class KohonenTrainingTask implements Runnable { 30 /** SOFM to be trained. */ 31 private final Network net; 32 /** Training data. */ 33 private final Iterator<double[]> featuresIterator; 34 /** Update procedure. */ 35 private final KohonenUpdateAction updateAction; 36 37 /** 38 * Creates a (sequential) trainer for the given network. 39 * 40 * @param net Network to be trained with the SOFM algorithm. 41 * @param featuresIterator Training data iterator. 42 * @param updateAction SOFM update procedure. 43 */ 44 public KohonenTrainingTask(Network net, 45 Iterator<double[]> featuresIterator, 46 KohonenUpdateAction updateAction) { 47 this.net = net; 48 this.featuresIterator = featuresIterator; 49 this.updateAction = updateAction; 50 } 51 52 /** 53 * {@inheritDoc} 54 */ 55 @Override 56 public void run() { 57 while (featuresIterator.hasNext()) { 58 updateAction.update(net, featuresIterator.next()); 59 } 60 } 61 }