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arXiv 2008.01508cs.AI
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动态多Agent系统中强化学习模型的解释

Explanation of Reinforcement Learning Model in Dynamic Multi-Agent System

Shanghai University(上海大学);University of Pittsburgh(匹兹堡大学)

Xinzhi Wang, Huao Li, Hui Zhang, Michael Lewis, Katia Sycara

摘要:

最近,人们对深度强化学习(DRL)系统的透明度和可解释性越来越感兴趣。口头解释作为我们日常生活中最自然的交流方式,值得更多的关注,因为它们可以让用户更好地了解系统,最终可以导致高度的信任和顺利的协作。本文报道了一种新的工作,在生成口头解释DRL行为代理。一个基于规则的模型被设计为使用一系列的规则,这些规则是预先定义的先验知识来构造解释。然后提出了一个学习模型,通过采用基于规则的解释作为训练数据,将生成口头解释的隐逻辑扩展到一般情况。该学习模型具有更好的灵活性和泛化能力比静态的基于规则的模型。这两个模型的性能通过客观指标进行定量评估。结果表明,两种模型产生的口头解释提高了用户对DRL系统的可解释性的主观满意度。此外,七个变体的学习模型的设计,以说明输入通道,注意力机制,并提出编码器在提高口头解释的质量的贡献。

英文摘要:

Recently, there has been increasing interest in transparency and interpretability in Deep Reinforcement Learning (DRL) systems. Verbal explanations, as the most natural way of communication in our daily life, deserve more attention, since they allow users to gain a better understanding of the system which ultimately could lead to a high level of trust and smooth collaboration. This paper reports a novel work in generating verbal explanations for DRL behaviors agent. A rule-based model is designed to construct explanations using a series of rules which are predefined with prior knowledge. A learning model is then proposed to expand the implicit logic of generating verbal explanation to general situations by employing rule-based explanations as training data. The learning model is shown to have better flexibility and generalizability than the static rule-based model. The performance of both models is evaluated quantitatively through objective metrics. The results show that verbal explanation generated by both models improve subjective satisfaction of users towards the interpretability of DRL systems. Additionally, seven variants of the learning model are designed to illustrate the contribution of input channels, attention mechanism, and proposed encoder in improving the quality of verbal explanation.

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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