lineminimizer.java

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/* Copyright (C) 2002 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. */




/** 
   @author Andrew McCallum <a href="mailto:[e-mail]">[e-mail]</a>
 */

package edu.umass.cs.mallet.base.minimize;

import edu.umass.cs.mallet.base.types.Matrix;

/** Minimize a function projected along a line. */

public interface LineMinimizer
{
	// Return the last step size used.
	public double minimize (Minimizable minable, Matrix line,
													double initialStep);

	public interface ByGradient
	{
		// Return the last step size used.
		public double minimize (Minimizable.ByGradient minable, Matrix line,
														double initialStep);
	}
	
}