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Nonstationary Reinforcement Learning with Linear Function Approximation
April 16, 2024, 4:44 a.m. | Huozhi Zhou, Jinglin Chen, Lav R. Varshney, Ashish Jagmohan
cs.LG updates on arXiv.org arxiv.org
Abstract: We consider reinforcement learning (RL) in episodic Markov decision processes (MDPs) with linear function approximation under drifting environment. Specifically, both the reward and state transition functions can evolve over time but their total variations do not exceed a $\textit{variation budget}$. We first develop $\texttt{LSVI-UCB-Restart}$ algorithm, an optimistic modification of least-squares value iteration with periodic restart, and bound its dynamic regret when variation budgets are known. Then we propose a parameter-free algorithm $\texttt{Ada-LSVI-UCB-Restart}$ that extends to …
abstract algorithm approximation arxiv budget cs.lg decision environment function functions linear markov processes reinforcement reinforcement learning state stat.ml total transition type variation
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