摘要： 本体在Web上的应用能够有效解决Web信息共享的语义问题。该文提出了基于Web本体和服务器日志文件的知识发现模型，主要讨论了用户访问行为的表示、语义用户分布的定义及发现算法。最后介绍了Web使用知识发现模型在Web个性化系统中的应用。

关键词: 语义Web, 本体, Web使用挖掘, 语义用户分布

Abstract: The application of ontology in the world wide web provides an effective solution to share web information with awareness of semantics. This paper proposes a new model for knowledge discovery based on web log files and ontology, chiefly discusses the presentation of user access behaviors and the definition and discovery algorithm of semantic user profiles. Finally, it introduces an application framework of Web usage knowledge discovery model in Web personalization system.

Key words: Semantic Web, Ontology, Web usage mining, Semantic user profile