public void DynamicConstructorTest()
{
var dist = UnivariateDistributionInfo.CreateInstance <HypergeometricDistribution>();
Assert.AreEqual(1, dist.PopulationSize);
Assert.AreEqual(0, dist.PopulationSuccess);
Assert.AreEqual(1, dist.SampleSize);
Assert.AreEqual(0, dist.Support.Min);
Assert.AreEqual(0, dist.Support.Max);
}
public void MedianTest2()
{
var target = UnivariateDistributionInfo.CreateInstance <ParetoDistribution>();
Assert.AreEqual(1, target.Alpha);
Assert.AreEqual(1, target.Scale);
double median = target.Median;
Assert.AreEqual(2, target.Median);
Assert.AreEqual(median, target.InverseDistributionFunction(0.5), 1e-6);
}
public void pdf()
{
NegativeBinomialDistribution dist = UnivariateDistributionInfo.CreateInstance <NegativeBinomialDistribution>();
Assert.AreEqual(0.5, dist.ProbabilityOfSuccess);
Assert.AreEqual(1, dist.NumberOfFailures);
double median = dist.Median;
Assert.AreEqual(0, median);
int middle = (int)median;
double pdf = dist.ProbabilityMassFunction(middle);
double lpdf = dist.LogProbabilityMassFunction(middle);
Assert.AreEqual(Math.Log(pdf), lpdf, 1e-10);
Assert.AreEqual(pdf, Math.Exp(lpdf), 1e-10);
}
