GaussNewtonModel.objective_value# t3toolbox.fitting.GaussNewtonModel.objective_value()# def objective_value(self) -> NDArray: # c = ½‖r‖² (+ ρ(X)), shape C The least-squares objective at the frame, c = ½‖r‖² (the model constant m(0)); plus ρ(X) when a regularizer is set (X = the frame’s tensor (U, P)). Return type: NDArray