jsom.java

Kohonen网络的学习过程可描述为：对于每一个网络的输入

package fi.javasom.jsom;
/**
 * Main JSom class.
 *
 *  Copyright (C) 2001  Tomi Suuronen
 *
 *  @version 1.0
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

import org.apache.xerces.parsers.SAXParser;
import org.xml.sax.*;

import java.io.*;

import fi.javasom.jsom.*;

public class JSom
{
	private boolean error;
	private SAXParser parser;
	private JobInstructionsHandler handler;

	/**
	 * Constructor.
	 *
	 * @param File file - the job instructions file (follows instructions.dtd).
	*/
	public JSom(File file)
	{
		error = false;
		parser = new org.apache.xerces.parsers.SAXParser();
		handler = new JobInstructionsHandler();
		parser.setContentHandler(handler);
		parser.setErrorHandler(handler);
		try
		{
			Reader reader = new BufferedReader(new FileReader(file.getAbsolutePath()));
			parser.parse(new InputSource(reader));
		}
		catch (Exception e)
		{
			error = true;
			System.out.println(e.getMessage());
		}
	}

	/**
	 * Constructor.
	 *
	 * @param String instructions - the job instructions string formatted as instructions.dtd specifies.
	*/
	public JSom(String instructions)
	{
		error = false;
		parser = new org.apache.xerces.parsers.SAXParser();
		handler = new JobInstructionsHandler();
		parser.setContentHandler(handler);
		parser.setErrorHandler(handler);
		try
		{
			Reader reader = new StringReader(instructions);
			parser.parse(new InputSource(reader));
		}
		catch (Exception e)
		{
			error = true;
			System.out.println(e.getMessage());
		}
	}

	/**
	 * A convenient way to enquire if an error has occured during processing the instructions.
	 *
	 * @return boolean - true if an error has occurred otherwise false.
	 */
	public boolean anyExceptions()
	{
		return error;
	}
}