public void CanCreateBetaScaled(double a, double b, double location, double scale)
{
var n = new BetaScaled(a, b, location, scale);
Assert.AreEqual(a, n.A);
Assert.AreEqual(b, n.B);
Assert.AreEqual(location, n.Location);
Assert.AreEqual(scale, n.Scale);
}
public void CanSample()
{
var n = new BetaScaled(2.0, 3.0, 0.0, 1.0);
n.Sample();
}
public void ValidateSkewness(double a, double b, double location, double scale, double skewness)
{
var n = new BetaScaled(a, b, location, scale);
AssertHelpers.AlmostEqualRelative(skewness, n.Skewness, 14);
}
public void ValidateToString()
{
var n = new BetaScaled(1d, 2d, 0.0, 1.0);
Assert.AreEqual("BetaScaled(α = 1, β = 2, μ = 0, σ = 1)", n.ToString());
}
public void ValidateMinimum()
{
var n = new BetaScaled(1.0, 1.0, 0.0, 1.0);
Assert.AreEqual(0.0, n.Minimum);
}
public void ValidateMode(double a, double b, double location, double scale, double mode)
{
var n = new BetaScaled(a, b, location, scale);
Assert.AreEqual(mode, n.Mode);
}
public void ValidateMedianThrowsNotSupportedException()
{
var n = new BetaScaled(1.0, 1.0, 0.0, 1.0);
Assert.Throws<NotSupportedException>(() => { var m = n.Median; });
}
public void ValidateMean(double a, double b, double location, double scale, double mean)
{
var n = new BetaScaled(a, b, location, scale);
Assert.AreEqual(mean, n.Mean);
}
public void ValidateInverseCumulativeDistribution(double a, double b, double location, double scale, double x, double p)
{
var dist = new BetaScaled(a, b, location, scale);
Assert.That(dist.InverseCumulativeDistribution(p), Is.EqualTo(x).Within(1e-6));
Assert.That(BetaScaled.InvCDF(a, b, location, scale, p), Is.EqualTo(x).Within(1e-6));
}
public void ValidateDensityLn(double a, double b, double location, double scale, double x, double pdfln)
{
var n = new BetaScaled(a, b, location, scale);
AssertHelpers.AlmostEqualRelative(pdfln, n.DensityLn(x), 5);
AssertHelpers.AlmostEqualRelative(pdfln, BetaScaled.PDFLn(a, b, location, scale, x), 5);
}
public void CanSampleSequence()
{
var n = new BetaScaled(2.0, 3.0, 0.0, 1.0);
var ied = n.Samples();
GC.KeepAlive(ied.Take(5).ToArray());
}