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Leveraging Offline Data in Online Reinforcement Learning

ICML 2023 · Reinforcement learning › Offline RL · approach: Offline-to-online fine-tuning · 3 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use offline data to initialize the online data buffer (FTPedel) instead of purely online exploration (Pedel)FTPedel in linear MDPs · theoretical linear MDP analysisonline sample complexityHelped
Offline data with poor coverage (dataset with 0 samples from suboptimal arms) combined with online explorationFTPedel vs purely offline or purely online RL · explicit three-state MDP construction (Proposition on provable improvement)online samples needed for epsilon-optimal policy: Ω(1/ε^2) for purely online reduced to O(1/ε^{8/5}) for FTPedelHelped
Offline data covering only the optimal arm, with online verification of other armsVerifiable RL in multi-armed bandit example · multi-armed bandit exampleadditional online samples needed from each suboptimal arm for verificationNo clear effect

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