/*
* 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) 2006 University of Waikato, Hamilton, New Zealand
*/
package weka.filters.unsupervised.attribute;
import weka.core.Instances;
import weka.filters.AbstractFilterTest;
import weka.filters.Filter;
import junit.framework.Test;
import junit.framework.TestSuite;
/**
* Tests InterquartileRange. Run from the command line with:<p>
* java weka.filters.unsupervised.attribute.InterquartileRangeTest
*
* @author FracPete (fracpete at waikato dot ac dot nz)
* @version $Revision: 5717 $
*/
public class InterquartileRangeTest
extends AbstractFilterTest {
/**
* Initializes the test with the given name.
*
* @param name the name of the test
*/
public InterquartileRangeTest(String name) {
super(name);
}
/**
* Creates a default InterquartileRange.
*
* @return the filter
*/
public Filter getFilter() {
return new InterquartileRange();
}
/**
* a typical test, with nominal class attribute.
*/
public void testNominalClass() {
// run filter
m_Instances.setClassIndex(1);
Instances icopy = new Instances(m_Instances);
Instances result = null;
try {
m_Filter.setInputFormat(icopy);
}
catch (Exception ex) {
ex.printStackTrace();
fail("Exception thrown on setInputFormat(): \n" + ex.getMessage());
}
try {
result = Filter.useFilter(icopy, m_Filter);
assertNotNull(result);
}
catch (Exception ex) {
ex.printStackTrace();
fail("Exception thrown on useFilter(): \n" + ex.getMessage());
}
// test
assertEquals(icopy.numAttributes() + 2, result.numAttributes());
assertEquals(icopy.numInstances(), result.numInstances());
}
/**
* a typical test, with nominal class attribute and on a single numeric
* attribute.
*/
public void testNominalClassSingleAttribute() {
// run filter
m_Instances.setClassIndex(1);
Instances icopy = new Instances(m_Instances);
Instances result = null;
((InterquartileRange) m_Filter).setAttributeIndices("3");
try {
m_Filter.setInputFormat(icopy);
}
catch (Exception ex) {
ex.printStackTrace();
fail("Exception thrown on setInputFormat(): \n" + ex.getMessage());
}
try {
result = Filter.useFilter(icopy, m_Filter);
assertNotNull(result);
}
catch (Exception ex) {
ex.printStackTrace();
fail("Exception thrown on useFilter(): \n" + ex.getMessage());
}
// test
assertEquals(icopy.numAttributes() + 2, result.numAttributes());
assertEquals(icopy.numInstances(), result.numInstances());
}
/**
* a typical test, with numeric class attribute.
*/
public void testNumericClass() {
// run filter
m_Instances.setClassIndex(2);
Instances icopy = new Instances(m_Instances);
Instances result = null;
try {
m_Filter.setInputFormat(icopy);
}
catch (Exception ex) {
ex.printStackTrace();
fail("Exception thrown on setInputFormat(): \n" + ex.getMessage());
}
try {
result = Filter.useFilter(icopy, m_Filter);
assertNotNull(result);
}
catch (Exception ex) {
ex.printStackTrace();
fail("Exception thrown on useFilter(): \n" + ex.getMessage());
}
// test
assertEquals(icopy.numAttributes() + 2, result.numAttributes());
assertEquals(icopy.numInstances(), result.numInstances());
}
/**
* a typical test, w/o class attribute.
*/
public void testWithoutClass() {
// run filter
Instances icopy = new Instances(m_Instances);
Instances result = null;
try {
m_Filter.setInputFormat(icopy);
}
catch (Exception ex) {
ex.printStackTrace();
fail("Exception thrown on setInputFormat(): \n" + ex.getMessage());
}
try {
result = Filter.useFilter(icopy, m_Filter);
assertNotNull(result);
}
catch (Exception ex) {
ex.printStackTrace();
fail("Exception thrown on useFilter(): \n" + ex.getMessage());
}
// test
assertEquals(icopy.numAttributes() + 2, result.numAttributes());
assertEquals(icopy.numInstances(), result.numInstances());
}
/**
* a typical test, w/o class attribute but with Outlier/ExtremeValue
* generation per attribute.
*/
public void testPerAttribute() {
// parameters
((InterquartileRange) m_Filter).setDetectionPerAttribute(true);
// run filter
Instances icopy = new Instances(m_Instances);
Instances result = null;
try {
m_Filter.setInputFormat(icopy);
}
catch (Exception ex) {
ex.printStackTrace();
fail("Exception thrown on setInputFormat(): \n" + ex.getMessage());
}
try {
result = Filter.useFilter(icopy, m_Filter);
assertNotNull(result);
}
catch (Exception ex) {
ex.printStackTrace();
fail("Exception thrown on useFilter(): \n" + ex.getMessage());
}
// test
int count = 0;
for (int i = 0; i < icopy.numAttributes(); i++) {
if (icopy.attribute(i).isNumeric())
count++;
}
assertEquals(icopy.numAttributes() + 2*count, result.numAttributes());
assertEquals(icopy.numInstances(), result.numInstances());
}
/**
* a typical test, w/o class attribute but with Outlier/ExtremeValue
* generation per attribute and Offset multiplier generation.
*/
public void testOffset() {
// parameters
((InterquartileRange) m_Filter).setDetectionPerAttribute(true);
((InterquartileRange) m_Filter).setOutputOffsetMultiplier(true);
// run filter
Instances icopy = new Instances(m_Instances);
Instances result = null;
try {
m_Filter.setInputFormat(icopy);
}
catch (Exception ex) {
ex.printStackTrace();
fail("Exception thrown on setInputFormat(): \n" + ex.getMessage());
}
try {
result = Filter.useFilter(icopy, m_Filter);
assertNotNull(result);
}
catch (Exception ex) {
ex.printStackTrace();
fail("Exception thrown on useFilter(): \n" + ex.getMessage());
}
// test
int count = 0;
for (int i = 0; i < icopy.numAttributes(); i++) {
if (icopy.attribute(i).isNumeric())
count++;
}
assertEquals(icopy.numAttributes() + 3*count, result.numAttributes());
assertEquals(icopy.numInstances(), result.numInstances());
}
/**
* Returns a test suite.
*
* @return the suite
*/
public static Test suite() {
return new TestSuite(InterquartileRangeTest.class);
}
/**
* Runs the test from the commandline.
*
* @param args ignored
*/
public static void main(String[] args){
junit.textui.TestRunner.run(suite());
}
}