logpdf_lazy_beta_negative_binomial
function logpdf_lazy_beta_negative_binomial(x:Expression<Integer>, k:Expression<Integer>, α:Expression<Real>, β:Expression<Real>) -> Expression<Real>
Observe a beta-negative-binomial variate
- x: The variate.
- k: Number of successes.
- α: Shape.
- β: Shape.
Returns: the log probability mass.