statsmodels.genmod.qif.QIF.objective¶
-
QIF.objective(params)[source]¶ Calculate the gradient of the QIF objective function.
- Parameters
- paramsarray_like
The model parameters at which the gradient is evaluated.
- Returns
- gradarray_like
The gradient vector of the QIF objective function.
- gn_derivarray_like
The gradients of each estimating equation with respect to the parameter.