statsmodels.discrete.discrete_model.Poisson.loglikeobs

Poisson.loglikeobs(params)

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

$$\ln L_{i}=\left[-\lambda_{i}+y_{i}x_{i}^{\prime}\beta-\ln y_{i}!\right]$$

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