statsmodels.sandbox.regression.gmm.LinearIVGMM.gmmobjective_cu¶ LinearIVGMM.gmmobjective_cu(params, weights_method='cov', wargs=())¶ objective function for continuously updating GMM minimization Parameters:¶ params : ndarray¶parameter values at which objective is evaluated Returns:¶ jval – value of objective function Return type:¶ float