arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.06703cs.LGcs.AI
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反向强化学习的回溯知识学习

Learning Retrospective Knowledge with Reverse Reinforcement Learning

University of Oxford(牛津大学);University of Michigan, Ann Arbor(密歇根大学安娜堡分校)

Shangtong Zhang, Vivek Veeriah, Shimon Whiteson

摘要:

我们提出了一个反向强化学习(反向RL)的方法来表示回顾性知识。一般价值函数(GVF)在表示预测知识方面取得了巨大成功,即,回答关于未来可能结果的问题,例如“如果我们从A开车到B,预计会消耗多少燃料?".然而,GVF不能回答这样的问题:“在时间$t$,我们期望一辆车在B点给它加多少油?”".为了回答这个问题,我们需要知道这辆车什么时候油箱是满的,以及这辆车是如何到达B点的。由于这类问题强调过去可能发生的事件对现在的影响,我们把它们的答案称为回顾性知识。在本文中,我们展示了如何用反向GVF表示回溯知识,这些GVF是通过反向RL训练的。我们实证证明了反向GVF在表示学习和异常检测中的实用性。

英文摘要:

We present a Reverse Reinforcement Learning (Reverse RL) approach for representing retrospective knowledge. General Value Functions (GVFs) have enjoyed great success in representing predictive knowledge, i.e., answering questions about possible future outcomes such as "how much fuel will be consumed in expectation if we drive from A to B?". GVFs, however, cannot answer questions like "how much fuel do we expect a car to have given it is at B at time $t$?". To answer this question, we need to know when that car had a full tank and how that car came to B. Since such questions emphasize the influence of possible past events on the present, we refer to their answers as retrospective knowledge. In this paper, we show how to represent retrospective knowledge with Reverse GVFs, which are trained via Reverse RL. We demonstrate empirically the utility of Reverse GVFs in both representation learning and anomaly detection.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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