public void IncorrectBinCount()
{
Assert.That(() =>
{
var wb = new WittenBellProbabilityDistribution <string>(_fd, _fd.ObservedSamples.Count);
}, Throws.TypeOf <ArgumentOutOfRangeException>());
}
public void NoSamples()
{
var wb = new WittenBellProbabilityDistribution <string>(new FrequencyDistribution <string>(), 1);
Assert.That(wb["a"], Is.EqualTo(0));
Assert.That(wb["b"], Is.EqualTo(0));
Assert.That(wb["c"], Is.EqualTo(0));
}
public void ProbabilityTwoUnseen()
{
var wb = new WittenBellProbabilityDistribution <string>(_fd, _fd.ObservedSamples.Count + 2);
Assert.That(wb["a"], Is.EqualTo(0.00952).Within(0.00001));
Assert.That(wb["c"], Is.EqualTo(0.01904).Within(0.00001));
Assert.That(wb["d"], Is.EqualTo(0.02857).Within(0.00001));
Assert.That(wb["o"], Is.EqualTo(0.07619).Within(0.00001));
Assert.That(wb["q"], Is.EqualTo(0.09523).Within(0.00001));
Assert.That(wb["t"], Is.EqualTo(0.08095).Within(0.00001));
Assert.That(wb["z"], Is.EqualTo(0.08095).Within(0.00001));
}