• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2013, Vol. 35 ›› Issue (2): 7-12.

• 论文 • 上一篇    下一篇

基于语义覆盖网的P2P信息共享系统研究

周广新1,唐九阳2,张扬3   

  1. (1.国防科学技术大学训练部,湖南 长沙 410073; 2.国防科学技术大学信息系统工程重点实验室,湖南 长沙 410073; 3.长沙师范专科学校办公室,湖南 长沙 410073)
  • 收稿日期:2011-11-23 修回日期:2012-05-29 出版日期:2013-02-25 发布日期:2013-02-25
  • 基金资助:

    国家自然科学基金资助项目(60903225)


Research on peertopeer information sharing system based on semantic overlay network

ZHOU Guangxin1,TANG Jiuyang2,ZHANG Yang3   

  1. (1.Training Department,National University of Defense Technology,Changsha 410073; 2.Science and Technology on Information Systems Engineering Laboratory,
    National University of Defense Technology,Changsha 410073; 3.Changsha Normal College,Changsha 410073,China)
  • Received:2011-11-23 Revised:2012-05-29 Online:2013-02-25 Published:2013-02-25

摘要:

现有P2P信息共享系统存在仅支持粗粒度、弱语义共享以及系统效率低等局限性,限制了其更大规模、更高层次的应用。基于资源相似节点通过信息聚类聚集在同一主题域,实现节点资源有序组织的思想,提出了一种基于语义覆盖网的P2P信息共享系统,建立由资源层、信息服务中心层、语义覆盖网络层和应用层四个层次组成的系统框架结构,并阐述了系统流程。分析表明,该系统有效优化了网络性能,可扩展性好,可以胜任不同的网络规模。

关键词: 语义覆盖网, 主题域, 聚类, 信息共享

Abstract:

Existing P2P information sharing systems can only support semanticsfree sharing of large granularity and inefficiently utilize their own resources, limiting their largescale, higherlevel applications. To address these challenges, the resources were clustered to form topics and the peers which include relevant topics were linked to form semantic overlay network. According to the principle, a fourlayer based architecture was proposed, which is made up of resource layer, information service center layer, semantic overlay network layer and applicationlayer. The corresponding analysis shows that the P2P information sharing system based on semantic overlay network effectively optimizes network performance and is scalable.

Key words: semantic overlay network;topic domain;cluster;information sharing