摘要
对网络中非结构化的文本资源进行有效的知识表示是语义Web面临的关键性问题。本文提出了基于<Meta-data,KnowledgeAtom,Relationship,Rule>四元组的知识本体的形式化定义,同时将该定义与在某一个知识领域内的5个基本建模元语相结合,采用BNF范式对知识本体进行统一的描述和表示,并实现了BNF与XML/DTD之间的知识本体框架的语义转换。最后,提出了统一的扩展RDF模型———XRDF,并进行了形式化定义与实例建模分析。
Knowledge representation is prominent technology for semantic web to represent the web resources with non-structural property. After the formalization definition of Knowledge ontology, with four core elements: Meta-data, Knowledge Atom, Relationship and Rule, integrated with five modeling Primitives in knowledge domain, a union definition of knowledge ontology by BNF description was provided and a exchange method for the semantic of knowledge ontology frame between BNF and DTD was presented. Then, the XRDF model, an extended RDF model, was formalized definition and analyzed.
出处
《微电子学与计算机》
CSCD
北大核心
2004年第9期26-29,共4页
Microelectronics & Computer
