statsmodels.miscmodels.count.PoissonGMLE.nloglikeobs¶
-
PoissonGMLE.
nloglikeobs
(params)[source]¶ Loglikelihood of Poisson model
- Parameters
- paramsarray_like
The parameters of the model.
- Returns
The
log
likelihood
of
the
model
evaluated
at
params
Notes
\[\ln L=\sum_{i=1}^{n}\left[-\lambda_{i}+y_{i}x_{i}^{\prime}\beta-\ln y_{i}!\right]\]