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arXiv 1902.09844cs.LO
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将幂集添加到描述逻辑

Adding the Power-Set to Description Logics

Laura Giordano, Alberto Policriti

摘要:

我们探讨描述逻辑和集合论之间的关系。这项研究是进行使用,在集理论方面,一个非常基本的公理集理论欧米茄,只有四个公理特征二元联盟,集差,包括,和权力集。然后定义了ALC的扩展,ALC^Omega,其中概念被自然地解释为生活在Omega模型中的集合。在ALC^Omega中,不仅允许概念之间的隶属关系-甚至允许循环-而且利用幂集构造来增加元建模能力。我们调查翻译的ALC^欧米茄到标准的描述逻辑,以及一套理论的翻译。ALCIO中ALC^Omega的多项式编码证明了有限模型属性的有效性以及概念可满足性复杂度的ExpTime上界。我们开发了一个集合论翻译的ALC^欧米茄在理论欧米茄,利用技术最初提出的正常模态和多模态逻辑转换成欧米茄。最后,我们表明,片段LC^欧米茄的ALC^欧米茄,它不承认的角色和个人的名字,是作为表达的ALC^欧米茄。

英文摘要:

We explore the relationships between Description Logics and Set Theory. The study is carried on using, on the set-theoretic side, a very rudimentary axiomatic set theory Omega, consisting of only four axioms characterizing binary union, set difference, inclusion, and the power-set. An extension of ALC, ALC^Omega, is then defined in which concepts are naturally interpreted as sets living in Omega-models. In ALC^Omega not only membership between concepts is allowed---even admitting circularity---but also the power-set construct is exploited to add metamodeling capabilities. We investigate translations of ALC^Omega into standard description logics as well as a set-theoretic translation. A polynomial encoding of ALC^Omega in ALCIO proves the validity of the finite model property as well as an ExpTime upper bound on the complexity of concept satisfiability. We develop a set-theoretic translation of ALC^Omega in the theory Omega, exploiting a technique originally proposed for translating normal modal and polymodal logics into Omega. Finally, we show that the fragment LC^Omega of ALC^Omega, which does not admit roles and individual names, is as expressive as ALC^Omega.

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