negative_binomial.cpp File Reference

NegativeBinomial(r, p) family implementation (discrete). More...

#include "DistributionCommon.h"
#include <cmath>
#include <memory>
#include <optional>
#include <random>
#include <string>
#include <utility>

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Namespaces
namespace	provsql

Detailed Description

NegativeBinomial(r, p) family implementation (discrete).

Number of failures before the r-th success, support {0, 1, 2, ...}, pmf(k) = C(k+r-1, k) p^r (1-p)^k (r real > 0 via the gamma form) – the same convention as the literal provsql.negative_binomial constructor. Only ever instantiated for a latent leaf provsql.negative_binomial(integer, random_variable); reached by sample(), by observe (weight = pmf at the datum), and the moment readouts. Self-contained: registered at the bottom.

Definition in file negative_binomial.cpp.