/*
* Encog(tm) Examples v2.4
* http://www.heatonresearch.com/encog/
* http://code.google.com/p/encog-java/
*
* Copyright 2008-2010 by Heaton Research Inc.
*
* Released under the LGPL.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*
* Encog and Heaton Research are Trademarks of Heaton Research, Inc.
* For information on Heaton Research trademarks, visit:
*
* http://www.heatonresearch.com/copyright.html
*/
package org.encog.examples.neural.xorpartial;
import org.encog.engine.util.Format;
import org.encog.neural.data.NeuralDataSet;
import org.encog.neural.data.basic.BasicNeuralDataSet;
import org.encog.neural.networks.BasicNetwork;
import org.encog.neural.networks.layers.Layer;
import org.encog.neural.networks.structure.AnalyzeNetwork;
import org.encog.neural.networks.synapse.Synapse;
import org.encog.util.logging.Logging;
import org.encog.util.simple.EncogUtility;
/**
* Partial neural networks. Encog allows you to remove any neuron connection in
* a fully connected neural network. This example creates a 2x10x10x1 neural
* network to learn the XOR. Several connections are removed prior to training.
*/
public class XORPartialAuto {
public static double XOR_INPUT[][] = { { 0.0, 0.0 }, { 1.0, 0.0 },
{ 0.0, 1.0 }, { 1.0, 1.0 } };
public static double XOR_IDEAL[][] = { { 0.0 }, { 1.0 }, { 1.0 }, { 0.0 } };
public static void main(final String args[]) {
Logging.stopConsoleLogging();
BasicNetwork network = EncogUtility.simpleFeedForward(2, 10, 10, 1,
false);
network.reset();
NeuralDataSet trainingSet = new BasicNeuralDataSet(XOR_INPUT, XOR_IDEAL);
EncogUtility.trainToError(network, trainingSet, 0.01);
AnalyzeNetwork analyze = new AnalyzeNetwork(network);
double remove = analyze.getWeights().getHigh()/50;
System.out.println(analyze.toString());
System.out.println("Remove connections below:" + Format.formatDouble(remove,5));
network.setProperty(BasicNetwork.TAG_LIMIT,remove);
network.getStructure().finalizeStructure();
network.setProperty(BasicNetwork.TAG_LIMIT,BasicNetwork.DEFAULT_CONNECTION_LIMIT);
network.getStructure().finalizeStructure();
analyze = new AnalyzeNetwork(network);
System.out.println(analyze.toString());
System.out.println("Final output:");
EncogUtility.evaluate(network, trainingSet);
}
}