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.