◆ operator()()

template<typename Theta , typename YVec , typename Mean , require_eigen_vector_t< Theta > * = nullptr>

auto stan::math::poisson_log_likelihood::operator()	(	const Theta &	theta,
		const YVec &	y,
		const std::vector< int > &	y_index,
		Mean &&	mean,
		std::ostream *
	)		const

inline

Returns the lpmf for a Poisson with a log link across multiple groups.

No need to compute the log normalizing constant.

Template Parameters

Theta	A type inheriting from `Eigen::EigenBase` with dynamic sized rows and 1 column.
YVec	A vector type containing integers.
Mean	type of the mean of the latent normal distribution

Parameters

[in]	theta	log Poisson rate for each group.
[in]	y	observed counts
[in]	y_index	group to which each observation belongs return lpmf for a Poisson with a log link.
[in]	mean	the mean of the latent normal variable
[in,out]	msgs	stream for messages from likelihood and covariance