statsmodels.discrete.discrete_model.Poisson.loglikeobs¶

Poisson.loglikeobs(params)[source]¶

Loglikelihood for observations of Poisson model

Parameters:¶

paramsarray_like

The parameters of the model.

Returns:¶

loglikearray_like

The log likelihood for each observation of the model evaluated at params. See Notes

Notes

$$\ln L_i=[-{\lambda }_i+y_i{x}_i^{\prime }\beta -\ln y_i!]$$

for observations $i=1,...,n$