statsmodels.sandbox.regression.gmm.LinearIVGMM.gradient_momcond¶
-
LinearIVGMM.
gradient_momcond
(params, **kwds)[source]¶ gradient of moment conditions
- Parameters
params : ndarray
parameter at which the moment conditions are evaluated
epsilon : float
stepsize for finite difference calculation
centered : bool
This refers to the finite difference calculation. If centered is true, then the centered finite difference calculation is used. Otherwise the one-sided forward differences are used.
TODO: looks like not used yet
missing argument weights