Sample from the zero-inflated Poisson distribution. With probability pi0 a
0 is drawn, otherwise it draws from the corresponding standard Poisson
distribution (which may also result in a 0 being drawn).
Usage
monty_random_zi_poisson(pi0, lambda, state)
monty_random_n_zi_poisson(n_samples, pi0, lambda, state)Arguments
- pi0
The probability of extra zeros
- lambda
The mean (zero or more, length 1 or n) of the Poisson part of the distribution. Only valid for lambda <= 10^7. Note that the mean of the zero-inflated Poisson distribution will actually be
(1 - pi0) * lambda- state
The random number state, from monty_rng_create
- n_samples
The number of samples to take, per stream. When using the multiple-sample interface, all other parameters are held constant (per stream).