摘要： ：网络信息空间中的信息资源具有数量大、分布范围广、异构和动态自治等特点，在丰富了用户获取信息的途径的同时也带来了新的问题：用户能够访问的信息量过于庞大而个体信息需求相对有限，怎样从浩如烟海的信息中快速找到满足用户需求的内容。为了解决这一问题，该文在研究总结现有各种信息资源定位方案的基础上，提出了网络信息空间中的信息资源定位机制。

关键词: 异构信息；信息资源定位；P2P；重叠网络

Abstract: The characteristics of networking information space are heterogeneous, distributed and dynamic etc. These characteristics facilitate people on accessing information resource. At the same time, they also bring problem of how to get needed information in the enormous information spaces. This paper proposes the mechanism of information resource location in networking information space to solve this problem.

Key words: Heterogeneous information; Information resource location; P2P; Overlay networks