statsmodels.genmod.generalized_estimating_equations.GEE.mean_deriv¶
-
GEE.
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.
lin_pred : array-like
The values of the linear predictor.
Returns: The value of the derivative of the expected endog with respect
to the parameter vector.
Notes
If there is an offset or exposure, it should be added to lin_pred prior to calling this function.