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arXiv cs/0005014cs.LOcs.AI
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表达性描述逻辑的实用推理

Practical Reasoning for Expressive Description Logics

Ian Horrocks, Ulrike Sattler, Stephan Tobies

摘要:

描述逻辑是一类知识表示形式化体系,其主要特征是构造器从原子概念和角色构造复杂的概念和角色。表达角色构造器在许多应用中很重要,但在计算上可能存在问题。我们提出了一个算法,决定可满足性的DL ALC扩展的传递和逆角色,角色层次结构,和合格的数量限制。早期的实验表明,该算法是非常适合实现。此外,我们还证明了仅具有传递和逆角色的ALC扩展仍然是PSPACE中的。最后,我们调查这个家庭的DL的可判定性的限制。

英文摘要:

Description Logics (DLs) are a family of knowledge representation formalisms mainly characterised by constructors to build complex concepts and roles from atomic ones. Expressive role constructors are important in many applications, but can be computationally problematical. We present an algorithm that decides satisfiability of the DL ALC extended with transitive and inverse roles, role hierarchies, and qualifying number restrictions. Early experiments indicate that this algorithm is well-suited for implementation. Additionally, we show that ALC extended with just transitive and inverse roles is still in PSPACE. Finally, we investigate the limits of decidability for this family of DLs.

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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