statsmodels.discrete.count_model.ZeroInflatedPoisson.score_obs¶
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ZeroInflatedPoisson.
score_obs
(params)¶ Generic Zero Inflated model score (gradient) vector of the log-likelihood
Parameters: params : array_like
The parameters of the model
Returns: score : ndarray, 1-D
The score vector of the model, i.e. the first derivative of the loglikelihood function, evaluated at params