statsmodels.miscmodels.count.PoissonGMLE.nloglikeobs
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PoissonGMLE.nloglikeobs(params)[source] -
Loglikelihood of Poisson model
Parameters: params : array-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]](http://statsmodels.sourceforge.net/stable/_images/math/e4597fd962cbf59131d80c1f7ed1e0e1de9f14ef.png)
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