logpdf_lazy_inverse_gamma_gamma

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function logpdf_lazy_inverse_gamma_gamma(x:Expression<Real>, k:Expression<Real>, α:Expression<Real>, β:Expression<Real>) -> Expression<Real>

Observe a compound-gamma variate.

• x: The variate.
• k: Shape.
• α: Prior shape.
• β: Prior scale.

Return: the log probability density.