Web-oriented knowledge description language
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摘要: 提出了Web知识描述层次模型,采用本体论技术从类、槽和槽约束3方面对领域知识建模,结合描述逻辑、框架系统建立了基于XML(eXtensible Markup Language)和本体论技术的知识描述语言(KDL).然后,介绍了KDL的扩展语法,并从一阶逻辑的角度对KDL的语义特征进行分析,提供KDL到FOL(First-Order Logic)的映射方法以完成KDL语言和FOL表达式之间的转化.实践证明KDL具有规范的语法和精确的语义,具有较强的逻辑推理能力.Abstract: An XML-based and ontology-supported knowledge description language (KDL) was first presented, which has three-tier structure(core KDL, extended KDL and complex KDL), and takes advantages of strongpoint of ontology, XML, description logics, frame-based systems. The XML-Based syntax of KDL was introduced, and the methods of translating KDL into first order logic (FOL) was given. The implementation of KDL on the Web was described, and the reasoning ability of KDL proved by experiment was illustrated. It is demonstrated by practice that KDL encompasses XML and resource description framework(RDF) model properties, and KDL has powerfully reasoning ability.
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Key words:
- Web /
- extensible markup language /
- ontology /
- description language /
- first order logic
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[1] 微软公司. XML 3.0技术内幕[M]. 北京:清华大学出版社,2001 Microsoft Company. XML 3.0[M]. Beijing:Tsinghua University Press, 2001(in Chinese) [2] Lassila O, Swick R. Resource description framework (RDF) model and syntax specification, W3C recommentation . http:// www. w3.org/ TR/ REC-rdf-syntax/, 1999-02/2003-01-15 [3]Fensel D. Ontology-based knowledge management[J]. Computer, 2002,35(11):56~59 [4]Baader F, Calvanese D, McGuinness, et al. The description logic handbook:theory, implementation and applications[M]. Cambridge, UK:Cambridge University Press, 2002 [5]Horrocks I. Some notes on the differences between DAML+OIL and DAML+ONT .http:// www.daml.org /2000/12/ differences-daml. html, 2000-12/2003-02-10
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