Search Results for author: Kohei Yata

Found 5 papers, 1 papers with code

Counterfactual Learning with General Data-generating Policies

no code implementations4 Dec 2022 Yusuke Narita, Kyohei Okumura, Akihiro Shimizu, Kohei Yata

Off-policy evaluation (OPE) attempts to predict the performance of counterfactual policies using log data from a different policy.

counterfactual Decision Making +1

Optimal Decision Rules Under Partial Identification

no code implementations9 Nov 2021 Kohei Yata

I consider a class of statistical decision problems in which the policy maker must decide between two alternative policies to maximize social welfare based on a finite sample.

counterfactual

Debiased Off-Policy Evaluation for Recommendation Systems

no code implementations20 Feb 2020 Yusuke Narita, Shota Yasui, Kohei Yata

Efficient methods to evaluate new algorithms are critical for improving interactive bandit and reinforcement learning systems such as recommendation systems.

counterfactual Off-policy evaluation +2

Efficient Counterfactual Learning from Bandit Feedback

no code implementations10 Sep 2018 Yusuke Narita, Shota Yasui, Kohei Yata

What is the most statistically efficient way to do off-policy evaluation and optimization with batch data from bandit feedback?

Causal Inference counterfactual +2

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