/// <summary>
/// Estimates expected value of a probability distribution given prior and positive and total samples,
/// using Bayes rule.
/// </summary>
/// <param name="prior">Prior probability distribution.</param>
/// <param name="positiveSamples">Number of positive samples.</param>
/// <param name="negSamples">Number of negative samples.</param>
/// <returns>Estimated expected value.</returns>
private void updateDistributionRandom(HistDistribution prior, int positiveSamples, int negSamples)
{
var pos = positiveSamples;
var neg = negSamples;
while (pos + neg > 0)
{
var ratio = pos / (double)(pos + neg);
if ((pos > 0) && (_random.NextDouble() < ratio))
{
prior.Update(true);
pos--;
}
else
{
prior.Update(false);
neg--;
}
}
Debug.Assert(pos == 0 && neg == 0);
}
