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Dealing with temporal indeterminacy in relational databases: An AI methodology

机译:处理关系数据库中的时间不确定:AI方法

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摘要

Time is pervasive of the human way of approaching reality, so that it has been widely studied in many research areas, including AI and relational Temporal Databases (TDB). While temporally imprecise information has been widely studied by the AI community, only few approaches have faced temporal indeterminacy (in particular, "don't know exactly when" indeterminacy) in TDBs. Indeed, as we will show in this paper, the treatment of time in general, and of temporal indeterminacy in particular, involves the introduction of implicit forms of data representation in TDBs. As a consequence, we propose a new AI-style methodology to cope with temporal indeterminacy in TDBs. Specifically, we show that typical AI notions and techniques, such as making explicit the semantics of the representation formalism, and adopting symbolic manipulation techniques based on such a semantics, can be fruitfully exploited in the development of a "principled" treatment of indeterminate time in relational databases.
机译:时间是接近现实的人道的普遍性,因此它已被广泛研究在许多研究领域,包括AI和关系时间数据库(TDB)。虽然AI社区已广泛研究了暂时的不精确信息,但只有很少的方法都面临时间不确定(特别是“在TDBS中的”不确定“时不确定。实际上,正如我们将在本文中展示的那样,特别是一般时间和时间不确定的处理,涉及在TDB中引入隐含的数据表示形式。因此,我们提出了一种新的AI风格方法来应对TDBS中的时间不确定。具体而言,我们表明典型的AI概念和技术,例如制作代表性形式主义的语义,以及基于这种语义采用符号操纵技术,可以在开发“原则”中的不确定时间关系数据库。

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