Abstract: In P2P environment, the bandwidth is occupied seriously and rate of resource search is lower. In view of this, a method of community discovery of P2P resource, which is based on users’ behaviors and community discovery, is proposed. Through the action of searching and loading, the net of resource relationship on top of the DHT structure of P2P network is built, in order to recognize the deeper relationship of the resources. The resources are divided into communities for resource search. The method can make the search quality higher. Experiments show that this method has a higher hit rate and accuracy.

Key words: Peer-to-Peer（P2P）, users&rsquo, behaviors, community discovery, resource search

摘要： 针对目前P2P（对等网）系统资源所存在的带宽占用严重、检索效率低下等问题，提出一种基于用户行为和社区发现的P2P资源检索方法。通过分析P2P文件系统中的海量的检索和下载行为，在DHT的结构化P2P网络之上构建资源关系网，挖掘资源之间的深层关系，用社区划分算法对资源划分社区后进行检索，用户的查询请求快速定位到相关的资源。实验表明，该方法有效提高了查全率和查准率。

关键词: 对等网, 用户行为, 社区发现, 资源检索