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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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*/
package hivemall.evaluation;
import org.junit.Assert;
import org.junit.Test;
import java.util.Arrays;
import java.util.List;
public class GradedResponsesMeasuresTest {
@Test
public void testNDCG() {
List<Double> recommendTopRelScoreList = Arrays.asList(5.0, 2.0, 4.0, 1.0, 3.0);
List<Double> truthTopRelScoreList = Arrays.asList(5.0, 4.0, 3.0);
double actual = GradedResponsesMeasures.nDCG(recommendTopRelScoreList, truthTopRelScoreList, 3);
Assert.assertEquals(0.918770780535d, actual, 0.0001d);
actual = GradedResponsesMeasures.nDCG(recommendTopRelScoreList, truthTopRelScoreList, 2);
Assert.assertEquals(0.812891283859d, actual, 0.0001d);
}
}