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Tianyuan Chen

2 accepted papers

2025

ACTIVE: Offline Reinforcement Learning via Adaptive Imitation and In-sample $V$-Ensemble

ICLR 2025poster

Offline reinforcement learning (RL) aims to learn from static datasets and thus faces the challenge of value estimation errors for out-of-distribution actions. The in-sample learning scheme addresses this issue by performing implicit TD backups that does not query the values of unseen actions. Howev…

Cited by 0SourcePDFScholar
2025

Offline RL with Smooth OOD Generalization in Convex Hull and its Neighborhood

ICLR 2025poster

Offline Reinforcement Learning (RL) struggles with distributional shifts, leading to the $Q$-value overestimation for out-of-distribution (OOD) actions. Existing methods address this issue by imposing constraints; however, they often become overly conservative when evaluating OOD regions, which cons…