graphicalmodel.java

这是一个matlab的java实现。里面有许多内容。请大家慢慢捉摸。

/* Copyright (C) 2003 Univ. of Massachusetts Amherst, Computer Science Dept.
   This file is part of "MALLET" (MAchine Learning for LanguagE Toolkit).
   http://www.cs.umass.edu/~mccallum/mallet
   This software is provided under the terms of the Common Public License,
   version 1.0, as published by http://www.opensource.org.  For further
   information, see the file `LICENSE' included with this distribution. */

package edu.umass.cs.mallet.grmm; // Generated package name


/**
 * Interface implemented by all graphical models, including directed
 * and undirected.  This interface is currently rather sparse.
 * <P>
 * Because GRMM currently contains little support for directed models,
 *  most of the interesting methods are in {@link UndirectedModel}.
 *  Over time, methods from that class may be lifted into this
 *  interface as well.
 * <P>
 * Created: Wed Sep 17 11:52:15 2003
 *
 * @author <a href="mailto:[e-mail]">Charles Sutton</a>
 * @version $Id: GraphicalModel.java,v 1.1 2004/07/15 17:53:31 casutton Exp $
 */

public interface GraphicalModel {

	/**
	 *  Returns the joint probability of the given assignment using the
	 *   given inference algorithm.
	 * <P>
	 *  This may require one marginal computation for each variable in
	 *   the assignement.  If the assignment uses all nodes in the
	 *   network, some inferencers support a method called
	 *   lookupJoint() which will be more efficient.
	 */
	public double query (Inferencer inferencer, Assignment assn);

	/**
	 *  Computes the marginal of all nodes using the given inferencer.
	 */
	public void computeMarginals (Inferencer inferencer);

}// GraphicalModel