结合地理位置与语义聚类的P2P叠加网构建  

The Construction of P2P Overlay Network Combination Location and Semantic Clustering

作　　者：霍英[1,2] 陈志刚[1] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410083 [2]韶关学院计算机科学学院,广东韶关512005

出　　处：《微电子学与计算机》2010年第8期77-81,85,共6页Microelectronics & Computer

基　　金：国家自然科学基金项目(60573127;60873082);湖南省自然科学基金项目(06JJ30032)

摘　　要：针对目前P2P叠加网效率不高与拓扑失配问题,以基于超节点体系结构的文件共享应用为背景,提出了一种结合网络节点位置信息与语义聚类的P2P叠加网拓扑构建策略POCLS.POCLS中节点依据物理位置信息就近组成各自治域,域中节点再根据共享资源的语义形成多个语义聚类,利用域和聚类对P2P叠加网进行双重管理.仿真表明POCLS在保证查询成功率的同时,有效减少了查询延时与网络冗余流量,提高了P2P网络性能.To improve the efficiency and the topology mismatch problem of P2P overlay network, a new strategy of topology construction, POCLS, was bring forward. Nodes in POCLS were organized as autonomous domains based on their physical location. Then the nodes in a domain were formed in different semantic clustering according to their resource shared. The P2P overlay network of POCLS was supervised by domain and clustering simultaneously. Simulation results show that the query delay and traffic redundant was effective reduced in POCLS, at same time the query success rate was ensured.

关 键 词：对等网 叠加网 拓扑感知 语义 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]