GEE.mean_deriv()

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.