statsmodels.genmod.generalized_estimating_equations.NominalGEE.mean_deriv¶
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NominalGEE.
mean_deriv
(exog, lin_pred)[source]¶ Derivative of the expected endog with respect to the parameters.
Parameters: exog : array_like
The exogeneous data at which the derivative is computed, number of rows must be a multiple of ncut.
lin_pred : array_like
The values of the linear predictor, length must be multiple of ncut.
Returns: The derivative of the expected endog with respect to the
parameters.