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arXiv 1904.04025cs.LGstat.ML
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只有相关信息才重要:滤除噪声样本以提高RL

Only Relevant Information Matters: Filtering Out Noisy Samples to Boost RL

Inria(法国国家信息与自动化研究所);Univ. Lille(里尔大学);CNRS(法国国家科学研究中心)

Yannis Flet-Berliac, Philippe Preux

摘要:

在强化学习中,策略梯度算法直接优化策略,并依赖于对环境的有效采样。尽管如此,虽然大多数抽样程序是基于直接的政策抽样,自我业绩的措施可以用来改善这种抽样之前,每次政策更新。遵循这一思路,我们引入了SAUNA,一种从梯度更新中拒绝非信息转换的方法。信息水平是根据由价值函数解释的方差分数来估计的:价值函数是V与经验回报之间差异的度量。在这项工作中,我们使用这个指标来选择有用的学习样本,我们证明,这种选择可以显着提高性能的策略梯度方法。(a)定义了SAUNA度量并介绍了它的变迁过滤方法。(b)我们进行了一组基准连续控制问题的实验。SAUNA显著提高性能。(c)我们研究了SAUNA如何可靠地选择对学习有最积极影响的样本,并研究了其在性能和样本效率方面的改进。

英文摘要:

In reinforcement learning, policy gradient algorithms optimize the policy directly and rely on sampling efficiently an environment. Nevertheless, while most sampling procedures are based on direct policy sampling, self-performance measures could be used to improve such sampling prior to each policy update. Following this line of thought, we introduce SAUNA, a method where non-informative transitions are rejected from the gradient update. The level of information is estimated according to the fraction of variance explained by the value function: a measure of the discrepancy between V and the empirical returns. In this work, we use this metric to select samples that are useful to learn from, and we demonstrate that this selection can significantly improve the performance of policy gradient methods. In this paper: (a) We define SAUNA's metric and introduce its method to filter transitions. (b) We conduct experiments on a set of benchmark continuous control problems. SAUNA significantly improves performance. (c) We investigate how SAUNA reliably selects samples with the most positive impact on learning and study its improvement on both performance and sample efficiency.

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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