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arXiv 1111.1486cs.AI
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在缺省逻辑中嵌入描述逻辑程序

Embedding Description Logic Programs into Default Logic

Guizhou University(贵州大学);University of Alberta(阿尔伯塔大学);Institute of Software, Chinese Academy of Sciences(中国科学院软件研究所);Technische Universität Wien(维也纳工业大学)

Yisong Wang, Jia-Huai You, Li Yan Yuan, Yi-Dong Shen, Thomas Eiter

摘要:

Eiter { \em et al.}被认为是一个突出的形式主义集成规则和本体知识库。一个令人感兴趣的问题是dl程序是否可以用非单调逻辑的一般形式来描述。本文研究了在缺省逻辑中嵌入dl程序的可能性。我们证明了强和弱答案集语义下的dl-程序可以通过结合两种翻译嵌入到缺省逻辑中,其中一种翻译从非单调dl-原子中消除了约束算子,另一种翻译将dl-程序转化为缺省理论。对于没有非单调dl原子但带有否定失败算子的dl程序,我们的嵌入是多项式的、忠实的和模块化的。此外,我们的默认逻辑编码可以以一种简单的方式扩展,以捕获最近提出的弱良好支持的答案集语义,为任意的dl程序。这些结果加强了默认逻辑可以作为一个富有成效的基础查询为基础的方法,整合本体和规则的论点。缺省逻辑以其简单的语法和直观的语义,加上可用的计算结果,可以被认为是一个有吸引力的方法集成的本体和规则。

英文摘要:

Description logic programs (dl-programs) under the answer set semantics formulated by Eiter {\em et al.} have been considered as a prominent formalism for integrating rules and ontology knowledge bases. A question of interest has been whether dl-programs can be captured in a general formalism of nonmonotonic logic. In this paper, we study the possibility of embedding dl-programs into default logic. We show that dl-programs under the strong and weak answer set semantics can be embedded in default logic by combining two translations, one of which eliminates the constraint operator from nonmonotonic dl-atoms and the other translates a dl-program into a default theory. For dl-programs without nonmonotonic dl-atoms but with the negation-as-failure operator, our embedding is polynomial, faithful, and modular. In addition, our default logic encoding can be extended in a simple way to capture recently proposed weakly well-supported answer set semantics, for arbitrary dl-programs. These results reinforce the argument that default logic can serve as a fruitful foundation for query-based approaches to integrating ontology and rules. With its simple syntax and intuitive semantics, plus available computational results, default logic can be considered an attractive approach to integration of ontology and rules.

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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