Kazuhide Nakata

Towards Assessing and Benchmarking Risk-Return Tradeoff of Off-Policy Evaluation

**Off-Policy Evaluation (OPE)** aims to assess the effectiveness of counterfactual policies using offline logged data and is frequently utilized to identify the top-$k$ promising policies for deployment in online A/B tests. Existing evaluation metrics for OPE estimators primarily focus on the "accur…