Contextual Bandits with Continuous Actions: Smoothing, Zooming, and Adapting
Contextual Bandits with Continuous Actions: Smoothing, Zooming, and Adapting
复制标题
具有连续动作的上下文强盗:平滑、缩放和适应
DOI:
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复制
发表时间:
2019
期刊:
影响因子:
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通讯作者:
Chicheng Zhang
中科院分区:
文献类型:
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作者:
A. Krishnamurthy;J. Langford;Aleksandrs Slivkins;Chicheng Zhang
We study contextual bandit learning with an abstract policy class and continuous action space. We obtain two qualitatively different regret bounds: one competes with a smoothed version of the policy class under no continuity assumptions, while the other requires standard Lipschitz assumptions. Both bounds exhibit data-dependent "zooming" behavior and, with no tuning, yield improved guarantees for benign problems. We also study adapting to unknown smoothness parameters, establishing a price-of-adaptivity and deriving optimal adaptive algorithms that require no additional information.
DOI:
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发表时间:
2018
期刊:
Proceedings of the 21st International Conference on Artificial Intelligence and Statistics (AISTATS
影响因子:
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作者:
Kallus, Nathan;Zhou, Angela
通讯作者:
Zhou, Angela
影响因子:
1.5
作者:
Bull A
通讯作者:
Bull A
影响因子:
2.5
作者:
Kleinberg, Robert;Slivkins, Aleksandrs;Upfal, Eli
通讯作者:
Upfal, Eli