001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package org.apache.commons.math3.ml.neuralnet.sofm; 019 020import java.util.Iterator; 021import org.apache.commons.math3.ml.neuralnet.Network; 022 023/** 024 * Trainer for Kohonen's Self-Organizing Map. 025 * 026 * @since 3.3 027 */ 028public class KohonenTrainingTask implements Runnable { 029 /** SOFM to be trained. */ 030 private final Network net; 031 /** Training data. */ 032 private final Iterator<double[]> featuresIterator; 033 /** Update procedure. */ 034 private final KohonenUpdateAction updateAction; 035 036 /** 037 * Creates a (sequential) trainer for the given network. 038 * 039 * @param net Network to be trained with the SOFM algorithm. 040 * @param featuresIterator Training data iterator. 041 * @param updateAction SOFM update procedure. 042 */ 043 public KohonenTrainingTask(Network net, 044 Iterator<double[]> featuresIterator, 045 KohonenUpdateAction updateAction) { 046 this.net = net; 047 this.featuresIterator = featuresIterator; 048 this.updateAction = updateAction; 049 } 050 051 /** 052 * {@inheritDoc} 053 */ 054 public void run() { 055 while (featuresIterator.hasNext()) { 056 updateAction.update(net, featuresIterator.next()); 057 } 058 } 059}