Calculate the parameters of the Gamma that best approximates the given log-Normal distribution. The approximation is the best in the sense that it minimizes the KL divergence from the log-Normal to the Gamma
convert_Poisson_Normal(ft, Qt, parms)The parameters of the conjugated distribution of the linear predictor.
numeric: A vector representing the means from the normal distribution.
matrix: A matrix representing the covariance matrix of the normal distribution.
list: A list of extra known parameters of the distribution. Not used in this kernel.
Other auxiliary functions for a Poisson outcome:
convert_Normal_Poisson(),
poisson_pred(),
update_Poisson()