/*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Copyright (C) 2007 University of Waikato, Hamilton, New Zealand
*/
package weka.filters.unsupervised.attribute;
import weka.core.Instances;
import weka.core.TestInstances;
import weka.filters.AbstractFilterTest;
import weka.filters.Filter;
import junit.framework.Test;
import junit.framework.TestSuite;
/**
* Tests RELAGGS. Run from the command line with:<p>
* java weka.filters.unsupervised.attribute.RELAGGSTest
*
* @author FracPete (fracpete at waikato dot ac dot nz)
* @version $Revision: 1.1 $
*/
public class RELAGGSTest
extends AbstractFilterTest {
public RELAGGSTest(String name) {
super(name);
}
/**
* Create a dataset with relational attributes to work on
*/
protected void setUp() throws Exception {
TestInstances test;
super.setUp();
test = new TestInstances();
test.setNumDate(1);
test.setNumNominal(1);
test.setNumNominalValues(10);
test.setNumNumeric(1);
test.setNumRelational(2);
test.setNumString(0);
test.setNumRelationalDate(2);
test.setNumRelationalNominal(2);
test.setNumRelationalNumeric(2);
test.setNumRelationalString(0);
test.setNumRelationalNominalValues(10);
m_Instances = test.generate();
}
/** Creates a default RELAGGS */
public Filter getFilter() {
return new RELAGGS();
}
/**
* returns data generated for the FilteredClassifier test
*
* @return the dataset for the FilteredClassifier
* @throws Exception if generation of data fails
*/
protected Instances getFilteredClassifierData() throws Exception {
return m_Instances;
}
public void testTypical() {
m_Filter = getFilter();
Instances result = useFilter();
// explanation of "(-1 + (2 + 2)*5 + 2*10)*2"
// -1: rel. attribute gets removed
// (2 + 2)*5: 2 date and 2 numeric each generate 5 attributes
// 2*10: 2 nominal attributes with 10 values
// (...)*2: 2 relational attributes
assertEquals(m_Instances.numAttributes() + (-1 + (2 + 2)*5 + 2*10)*2, result.numAttributes());
assertEquals(m_Instances.numInstances(), result.numInstances());
}
/**
* tests the max. cardinality parameter
*/
public void testMaxCardinality() {
m_Filter = getFilter();
((RELAGGS) m_Filter).setMaxCardinality(5); // this skips the nominal atts. with 10 values
Instances result = useFilter();
// explanation of "(-1 + (2 + 2)*5)*2"
// -1: rel. attribute gets removed
// (2 + 2)*5: 2 date and 2 numeric each generate 5 attributes
// (...)*2: 2 relational attributes
assertEquals(m_Instances.numAttributes() + (-1 + (2 + 2)*5)*2, result.numAttributes());
assertEquals(m_Instances.numInstances(), result.numInstances());
}
/**
* tests whether we can handle data that contains NO relational attribute
* at all
*/
public void testNoRelationalAttribute() {
m_Filter = getFilter();
// delete the rel. attributes
int i = 0;
while (i < m_Instances.numAttributes()) {
if (m_Instances.attribute(i).isRelationValued())
m_Instances.deleteAttributeAt(i);
else
i++;
}
Instances result = useFilter();
assertEquals(m_Instances.numAttributes(), result.numAttributes());
assertEquals(m_Instances.numInstances(), result.numInstances());
}
public static Test suite() {
return new TestSuite(RELAGGSTest.class);
}
public static void main(String[] args){
junit.textui.TestRunner.run(suite());
}
}