accuracyevaluator.java

常用机器学习算法,java编写源代码,内含常用分类算法,包括说明文档

/* 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.classify;

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

public class AccuracyEvaluator
{
	public boolean evaluate (Classifier classifier, boolean finishedTraining, int iteration, double cost,
													 InstanceList training, InstanceList validation, InstanceList testing)
	{
		System.out.print ("Iteration="+iteration);
		System.out.print (" cost="+cost);
		System.out.print (" Accuracy: training="+ classifier.getAccuracy(training));
		if (validation != null)
			System.out.print (" validation="+ classifier.getAccuracy(validation));
		if (testing != null)
			System.out.print (" testing="+ classifier.getAccuracy(testing));
		System.out.println ("");
		return true;
	}
}