ry.advanced.org/10030/6atpdvah.htm"> math definition The hypergeometric distribution with parameters
N,
n and
s is the probability distribution of the random variable X, whose value is the number of successes in a sample of
n items from a population of size
N that has
s 'success' items and
N - s 'failure' items.
p(k) = C(s,k) * C(N-s,n-k) / C(N,n) where C(a,b) = a! / (b! * (a-b)!).
valid for N >= 2, s,n <= N.
Instance methods operate on a user supplied uniform random number generator; they are unsynchronized.
Static methods operate on a default uniform random number generator; they are synchronized. Implementation: High performance implementation. Patchwork Rejection/Inversion method.
This is a port of hprsc.c from the C-RAND / WIN-RAND library. C-RAND's implementation, in turn, is based upon H. Zechner (1994): Efficient sampling from continuous and discrete unimodal distributions, Doctoral Dissertation, 156 pp., Technical University Graz, Austria.
@author wolfgang.hoschek@cern.ch
@version 1.0, 09/24/99