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