public void CookieJar_Example_Weighted(int total, int choc1, int choc2, int expectedNumerator, int expectedDenominator)
{
// Given we have 2 jars
// jar one contains 10 choc and 30 vanilla
// jar two contains 20 choc and 20 vanilla
// what is the probability of drawing a
// vanilla cookie from jar 1
var sample1 = new WeightedSample<Cookie>("Jar1");
var sample2 = new WeightedSample<Cookie>("Jar2");
var hypos = new HypoSet<Cookie>("All");
hypos.Add(sample1, sample2);
var chocx = new Cookie() { F = 'C' };
var vanix = new Cookie() { F = 'V' };
var choc = It.Is(chocx);
var vani = It.Is(vanix);
sample1[chocx] = choc1;
sample1[vanix] = total - choc1;
sample2[chocx] = choc2;
sample2[vanix] = total - choc2;
sample1.ProbabilityOfEvent(choc);
sample2.ProbabilityOfEvent(choc);
var postProb = hypos.PosterierProbability(sample1, vani);
Assert.That(postProb.Numerator, Is.EqualTo(expectedNumerator));
Assert.That(postProb.Denominator, Is.EqualTo(expectedDenominator));
}
public void CookieJar_Example1(int total, int choc1, int choc2, int expectedNumerator, int expectedDenominator)
{
var sample1 = new Sample<Cookie>("Jar1");
var sample2 = new Sample<Cookie>("Jar2");
var hypos = new HypoSet<Cookie>("All");
hypos.Add(sample1, sample2);
sample1.Add(total - choc1, n => new Cookie() { F = 'V' });
sample1.Add(choc1, n => new Cookie() { F = 'C' });
sample2.Add(total - choc2, n => new Cookie() { F = 'V' });
sample2.Add(choc2, n => new Cookie() { F = 'C' });
var choc = It.IsAny<Cookie>(c => c.F == 'C');
var vani = It.IsAny<Cookie>(c => c.F == 'V');
sample1.ProbabilityOfEvent(choc);
sample2.ProbabilityOfEvent(choc);
var postProb = hypos.PosterierProbability(sample1, vani);
Assert.That(postProb.Numerator, Is.EqualTo(expectedNumerator));
Assert.That(postProb.Denominator, Is.EqualTo(expectedDenominator));
}
