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arXiv cs/0307071cs.AIcs.LO
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动态系统中的信念建模,第II部分:修订和更新

Modeling Belief in Dynamic Systems, Part II: Revisions and Update

Nir Friedman, Joseph Y. Halpern

摘要:

信念变化的研究一直是哲学和人工智能领域的一个活跃领域。近年来,人们对信念改变的两种特殊情况--信念修正和信念更新进行了详细的研究。在一个配套文件中,我们介绍了一个新的框架模型的信念变化。这个框架结合了时间和认知模态的概念,使我们能够检查随着时间的推移信念的变化。在本文中,我们将展示如何在我们的框架中捕获信念修正和信念更新。这使我们能够比较每种方法所做的假设,并更好地理解它们背后的原理。特别是,它表明,胜野和门德尔松的信念更新的概念取决于几个强有力的假设,可能会限制其在人工智能的适用性。最后,我们的分析使我们能够确定一个概念,最小的变化,基础广泛的信念改变操作,包括修订和更新。

英文摘要:

The study of belief change has been an active area in philosophy and AI. In recent years two special cases of belief change, belief revision and belief update, have been studied in detail. In a companion paper, we introduce a new framework to model belief change. This framework combines temporal and epistemic modalities with a notion of plausibility, allowing us to examine the change of beliefs over time. In this paper, we show how belief revision and belief update can be captured in our framework. This allows us to compare the assumptions made by each method, and to better understand the principles underlying them. In particular, it shows that Katsuno and Mendelzon's notion of belief update depends on several strong assumptions that may limit its applicability in artificial intelligence. Finally, our analysis allow us to identify a notion of minimal change that underlies a broad range of belief change operations including revision and update.

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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