Off-Policy Confidence Sequences

               Nikos Karampatziakis 1 Paul Mineiro 2 Aaditya Ramdas 3

            Abstract                 that the probability that they ever exclude the true value is
                                 bounded by a prespecified quantity. In other words, they
   We develop confidence bounds that hold uni-         retain validity under optional (early) stopping and optional
   formly over time for off-policy evaluation in the      continuation (collecting more dat ...