statsmodels.discrete.discrete_model.NegativeBinomialP.score_factor¶
- NegativeBinomialP.score_factor(params, endog=None)[source]¶
Generalized Negative Binomial (NB-P) model score (gradient) vector of the log-likelihood for each observations.
- Parameters:
params (array-like) – The parameters of the model
- Returns:
score – The score vector of the model, i.e. the first derivative of the loglikelihood function, evaluated at params
- Return type:
ndarray, 1-D
