filemodeltest.java

一个很好的LIBSVM的JAVA源码。对于要研究和改进SVM算法的学者。可以参考。来自数据挖掘工具YALE工具包。

/*
 *  YALE - Yet Another Learning Environment
 *  Copyright (C) 2001-2004
 *      Simon Fischer, Ralf Klinkenberg, Ingo Mierswa, 
 *          Katharina Morik, Oliver Ritthoff
 *      Artificial Intelligence Unit
 *      Computer Science Department
 *      University of Dortmund
 *      44221 Dortmund,  Germany
 *  email: [e-mail]
 *  web:   http://yale.cs.uni-dortmund.de/
 *
 *  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.
 */
package edu.udo.cs.yale.operator.learner.test;

import edu.udo.cs.yale.example.Attribute;
import edu.udo.cs.yale.test.TestCase;
import edu.udo.cs.yale.tools.Ontology;
import edu.udo.cs.yale.operator.learner.*;
import edu.udo.cs.yale.operator.learner.kernel.MySVMModel;
import edu.udo.cs.yale.operator.learner.kernel.SVMLightModel;
import junit.framework.AssertionFailedError;

import java.io.*;

public class FileModelTest extends ModelTestCase {

    private static final String TEST_MODEL_CONTENTS = "test model file\nline 2\nEOF";

    private File modelFile;

    public void setUp() throws Exception {
	super.setUp();
	modelFile = File.createTempFile("yale_test", "model");
	PrintWriter out = new PrintWriter(new FileOutputStream(modelFile));
	out.print(TEST_MODEL_CONTENTS);
	out.close();
    }

    public void tearDown() throws Exception {
	modelFile.delete();
	super.tearDown();
    }

    public void testMySVMModelSave() throws Exception {
	FileModel model = new MySVMModel(new Attribute(Ontology.NOMINAL, Ontology.SINGLE_VALUE),
					 modelFile, true, true, 
					 new String[] {"type dot", "kernel parameter"},
					 new String[] {"degree 3", "C 1000", "epsilon 0.1"});
	testContents(model);
	testSave(model);
    }

    public void testSVMLightModelSave() throws Exception {
	FileModel model = new SVMLightModel(new Attribute(Ontology.NOMINAL, Ontology.SINGLE_VALUE), modelFile, true);
	testContents(model);
	testSave(model);
    }

    public void testContents(FileModel model) throws Exception {
	BufferedReader in = new BufferedReader(model.getReader());
	assertEquals("First line of '"+model.getName()+"'", "test model file", in.readLine());
	assertEquals("second line of '"+model.getName()+"'", "line 2", in.readLine());
	assertEquals("third line of '"+model.getName()+"'", "EOF", in.readLine());
    }
}