Examples with NormalDistribution de.lmu.ifi.dbs.elki.math.statistics.distribution.NormalDistribution used on opensource projects

Example 11 with NormalDistribution

use of de.lmu.ifi.dbs.elki.math.statistics.distribution.NormalDistribution in project elki by elki-project.

the class NormalLMMEstimatorTest method testEstimator.

@Test
public void testEstimator() {
    final NormalLMMEstimator est = instantiate(NormalLMMEstimator.class, NormalDistribution.class);
    load("norm.ascii.gz");
    double[] data = this.data.get("random_01_01");
    NormalDistribution dist = est.estimate(data, DoubleArrayAdapter.STATIC);
    assertStat("mean", dist.getMean(), 0.1, -0.01038465173940939);
    assertStat("stddev", dist.getStddev(), 0.1, -0.008827779497812646);
    data = this.data.get("random_0_1");
    dist = est.estimate(data, DoubleArrayAdapter.STATIC);
    assertStat("mean", dist.getMean(), 0., -0.02278981436658599);
    assertStat("stddev", dist.getStddev(), 1., -0.02088104864887541);
    data = this.data.get("random_1_3");
    dist = est.estimate(data, DoubleArrayAdapter.STATIC);
    assertStat("mean", dist.getMean(), 1., -0.4189550588142462);
    assertStat("stddev", dist.getStddev(), 3., 0.24292144344037636);
}