PAC Bounds for Discounted MDPs
PAC Bounds for Discounted MDPs
复制标题
折扣 MDP 的 PAC 界限
DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
Marcus Hutter
中科院分区:
文献类型:
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作者:
Tor Lattimore;Marcus Hutter
We study upper and lower bounds on the sample-complexity of learning near-optimal behaviour in finite-state discounted Markov Decision Processes (mdps). We prove a new bound for a modified version of Upper Confidence Reinforcement Learning (ucrl) with only cubic dependence on the horizon. The bound is unimprovable in all parameters except the size of the state/action space, where it depends linearly on the number of non-zero transition probabilities. The lower bound strengthens previous work by being both more general (it applies to all policies) and tighter. The upper and lower bounds match up to logarithmic factors provided the transition matrix is not too dense.