【摘要】 设计一个面向企业门户网站的语义Web体系结构,提出页面代理的概念及其作用与功能结构,并在同构环境下实现了页面代理.设计了语义Web查询语言CDQL,该语言在跨信息源查询、约束表示等方面扩充了DQL查询语言.整个语义Web体系结构可以用于构建能自动解答用户或用户代理提问的企业网站系统.更多还原

【Abstract】 An architecture of semantic Web portal is designed. The concept of page agent is proposed and implemented in a homogeneous environment. The system employs a new Web query language CDQL, which is an extension of the well-known query language DQL with constraints and across-information-source querying. The system can be used to construct enterprise Web systems, which can automatically answer questions from users and user agents.更多还原