/// <summary>
/// Defines a sample stream for a poisson distribution which represents the probability of
/// a given number of independent events occurring over a period of time at a constant rate
/// </summary>
/// <param name="random">The random source</param>
/// <param name="lambda">The constant rate of occurrence</param>
public static IEnumerable <int> SamplePoisson(this IPolyrand random, double lambda)
{
var sysrand = SysRand.Derive(random);
while (true)
{
yield return(MlStats.SampleFromPoisson(sysrand, lambda));
}
}
/// <summary>
/// Defines a sample stream for a poisson distribution which represents the probability of
/// a given number of independent events occurring over a period of time at a constant rate
/// </summary>
/// <param name="random">The random source</param>
/// <param name="lambda">The constant rate of occurrence</param>
public static IEnumerable <T> SamplePoisson <T>(this IPolyrand random, T lambda)
where T : struct
{
var sysrand = SysRand.Derive(random);
var l = convert <T, double>(lambda);
while (true)
{
yield return(convert <T>(MlStats.SampleFromPoisson(sysrand, l)));
}
}