statsmodels.discrete.discrete_model.NegativeBinomialP.hessian_factor¶ NegativeBinomialP.hessian_factor(params)[source]¶ Generalized Negative Binomial (NB-P) model hessian maxtrix of the log-likelihood Parameters:¶ paramsarray_likeThe parameters of the model Returns:¶ hessianndarray, 2-DThe hessian matrix of the model.