This function constructs a likelihood object to represent a Poisson likelihood node.
Usage
Poisson(input_dim = NULL)
Value
A 'python' object to represent a Poisson likelihood node.
Arguments
input_dim
a vector of length one that contains the indices of one GP node in the feeding
layer whose outputs feed into this likelihood node. When set to NULL,
all outputs from GP nodes in the feeding layer feed into this likelihood node, and in such a case
one needs to ensure that only one GP node is specified in the feeding layer.
Defaults to NULL.