update_lazy_beta_binomial

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function update_lazy_beta_binomial(x:Expression<Integer>, n:Expression<Integer>, α:Expression<Real>, β:Expression<Real>) -> (Expression<Real>, Expression<Real>)

Update the parameters of a Beta distribution with a Binomial likelihood.

• x: The variate.
• n: Number of trials.
• α: Prior first shape.
• β: Prior second shape.

Returns: the posterior hyperparameters α' and β'.