Package com.facebook.LinkBench.distributions

Examples of com.facebook.LinkBench.distributions.GeometricDistribution

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public class GeomDistTest extends DistributionTestBase {

  @Override
  protected ProbabilityDistribution getDist() {
    return new GeometricDistribution();
  }
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  /**
   * Test cdf and pdf against precalculated values
   */
  @Test
  public void testGeom() {
    GeometricDistribution d = new GeometricDistribution();
    d.init(1, Long.MAX_VALUE, 0.3, 1.0);
    assertEquals(0.3, d.cdf(1), 0.001);
    assertEquals(0.51, d.cdf(2), 0.001);
    assertEquals(0.657, d.cdf(3), 0.001);
    assertEquals(0.917646, d.cdf(7), 0.001);
    assertEquals(0.971752, d.cdf(10), 0.001);
    assertEquals(0.995252, d.cdf(15), 0.001);

    assertEquals(0.3, d.pdf(1), 0.001);
    assertEquals(0.21, d.pdf(2), 0.001);
    assertEquals(0.147, d.pdf(3), 0.001);
    assertEquals(0.035, d.pdf(7), 0.001);
    assertEquals(0.012106, d.pdf(10), 0.001);
    assertEquals(0.002035, d.pdf(15), 0.001);
  }
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Related Classes of com.facebook.LinkBench.distributions.GeometricDistribution

  • com.facebook.LinkBench.GeomDistTest
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