关键词: 元数据模型 信息服务 语义覆盖网 本体 信息资源中心

Abstract:

This paper aims at the demands of user-requirements-orlented information services, and puts forward an information organization and service framework  based on semantic overlay networks. The framework provides a flat information sharing and service environment by considering the information demands and  information architecture of users. The frame- work performs information integrating and organizing at IRC by the combined bottom-up and top-down inform  ation organization mode, and builds the semantic overlay network by semantic similarity clustering to provide the capability of information resource releasing, discovering and locating.

Key words: metadata model, information service, semantic overlay network, ontology, IRC