1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
package com.yahoo.search.dispatch;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class TopKEstimatorTest {
@Test
public void requireHitsAreEstimatedAccordingToPartitionsAndProbability() {
TopKEstimator estimator = new TopKEstimator(30, 0.999);
assertEquals(91.97368471911312, estimator.estimateExactK(200, 3), 0.0);
assertEquals(92, estimator.estimateK(200, 3));
assertEquals(37.96328109101396, estimator.estimateExactK(200, 10), 0.0);
assertEquals(38, estimator.estimateK(200, 10));
assertEquals(23.815737601023095, estimator.estimateExactK(200, 20), 0.0);
assertEquals(24, estimator.estimateK(200, 20));
}
}
|
