Scheme-invariant NNLO evolution for unpolarized DIS structure functions
  We discuss the combination of NNLO standard QCD evolution and scheme-invariant analysis for unpolarized DIS structure functions data as a method to reduce the theoretical errors on the determination of $\alpha_s(M_Z^2)$ to $\sim 1$% in order to match the accuracy forseen for experimental errors from future high statistics measurements. 
J. Bl\"umlein, A. Guffanti