Before revision:  Uniform OPE \sup_\Pi|Q^\pi-Q^\pi|<\epsilon (initiated by \mbox{%DIFAUXCMD yin2021near is a stronger measure than the point-wise (fixed policy) OPE and ensures offline policy learning when \Pi contains all policies ( global policy class).
After revision:  Uniform OPE \sup_\Pi|Q^\pi-Q^\pi|<\epsilon is a stronger measure than the point-wise (fixed policy) OPE and ensures offline policy learning when \Pi contains all policies ( global policy class).