/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.math.estimation;
import org.apache.commons.math.estimation.EstimatedParameter;
import org.apache.commons.math.estimation.WeightedMeasurement;
import junit.framework.*;
@Deprecated
public class WeightedMeasurementTest
extends TestCase {
public WeightedMeasurementTest(String name) {
super(name);
p1 = null;
p2 = null;
}
public void testConstruction() {
WeightedMeasurement m = new MyMeasurement(3.0, theoretical() + 0.1, this);
checkValue(m.getWeight(), 3.0);
checkValue(m.getMeasuredValue(), theoretical() + 0.1);
}
public void testIgnored() {
WeightedMeasurement m = new MyMeasurement(3.0, theoretical() + 0.1, this);
assertTrue(!m.isIgnored());
m.setIgnored(true);
assertTrue(m.isIgnored());
m.setIgnored(false);
assertTrue(!m.isIgnored());
}
public void testTheory() {
WeightedMeasurement m = new MyMeasurement(3.0, theoretical() + 0.1, this);
checkValue(m.getTheoreticalValue(), theoretical());
checkValue(m.getResidual(), 0.1);
double oldP1 = p1.getEstimate();
p1.setEstimate(oldP1 + m.getResidual() / m.getPartial(p1));
checkValue(m.getResidual(), 0.0);
p1.setEstimate(oldP1);
checkValue(m.getResidual(), 0.1);
double oldP2 = p2.getEstimate();
p2.setEstimate(oldP2 + m.getResidual() / m.getPartial(p2));
checkValue(m.getResidual(), 0.0);
p2.setEstimate(oldP2);
checkValue(m.getResidual(), 0.1);
}
@Override
public void setUp() {
p1 = new EstimatedParameter("p1", 1.0);
p2 = new EstimatedParameter("p2", 2.0);
}
@Override
public void tearDown() {
p1 = null;
p2 = null;
}
private void checkValue(double value, double expected) {
assertTrue(Math.abs(value - expected) < 1.0e-10);
}
private double theoretical() {
return 3 * p1.getEstimate() - p2.getEstimate();
}
private double partial(EstimatedParameter p) {
if (p == p1) {
return 3.0;
} else if (p == p2) {
return -1.0;
} else {
return 0.0;
}
}
private static class MyMeasurement
extends WeightedMeasurement {
public MyMeasurement(double weight, double measuredValue,
WeightedMeasurementTest testInstance) {
super(weight, measuredValue);
this.testInstance = testInstance;
}
@Override
public double getTheoreticalValue() {
return testInstance.theoretical();
}
@Override
public double getPartial(EstimatedParameter p) {
return testInstance.partial(p);
}
private transient WeightedMeasurementTest testInstance;
private static final long serialVersionUID = -246712922500792332L;
}
private EstimatedParameter p1;
private EstimatedParameter p2;
}