Abstract: Fistly,With the development of the information grid technology and the SOA technology,the focus on information sharing and integration has been shifted from LAN to WAN,integrated approach has been shifted from static to dynamic,data sharing is geometric growth,sharing and distribution pattern has been from“point-to-point” to“many-to-many”.Secondly,compared with above demands,it analyzes existing actuality and disparity of our information systems and also points out that sharing model in the current space our information systems is still “point-to-point”.Thirdly,the solution based on the“shared space” and pulish/subscribe,is proposed.

Key words: shared space, pulish/subscribe, metadata, ontology

摘要： 首先指出了信息栅格下的信息共享的范围由局域网发展到广域网范围,集成方式由静态集成到动态集成,共享数据量呈几何增长,共享和分发模式由“点对点”发展到“多对多”,在共享层次上由技术共享发展到语义共享;第二,指出目前信息系统的共享模式依然是“点到点”的共享,信息共享仍然停留在“技术层面”的共享,基于内容的信息搜索与发现弱,自动的按需分发能力弱,并且指出了点到点信息共享机制对网格环境的不适应性。第三,提出了以共享空间为基础,以发布/订阅为信息交换手段的共享解决方案,并且进一步给出了系统的共享模式,提出了由数据资源、元数据管理、基于内容的搜索、信息访问和发布/订阅、用户访问控制等组成的分层的框架结构。

关键词: 共享空间, 发布/订阅, 元数据, 知识本体