SSON:一种基于结构化P2P网络路由的语义覆盖网络结构  

SSON: A Semantic Overlay Network Structure Based on the Routing Mechanism of Structured P2P Network

作　　者：于婧[1] 汪斌强[1] 

机构地区：[1]国家数字交换系统工程技术研究中心,郑州450002

出　　处：《计算机科学》2007年第6期4-6,18,共4页Computer Science

基　　金：国家863计算信息技术领域重大项目资助课题(No.2005-AA-121210)。

摘　　要：本文基于结构化P2P网络路由机制,采用基于主题划分的方法,提出了基于结构化P2P网络路由的语义覆盖网络SSON。SSON通过结构化P2P网络的标识符映射机制,根据资源类别将结点组织成层次化的覆盖网络,该覆盖网络结构确保搜索限制在与查询主题相关的局部结点子集中。该结构充分利用了结构化P2P网络的优点,解决了基于非结构化P2P网络建立的语义覆盖网络的对主题群的搜索低效问题,同时克服了结构化P2P网络仅支持精确匹配查找的缺点,为结构化P2P网络提供了可靠、高效的语义查询机制,极大地提高了查全率。A semantic overlay network structure, which is based on structured P2P routing mechanism and topic partition, is presented. By assigning nodeid and key according to the topic, SSON collects the nodes with the similar topic into a cluster. When searching content, it first finds the cluster with the structured P2P routing mechanism, and then it limits the query in the range of cluster. Compared with the semantic overlay network based on unstructured P2P network, this structure provides more efficient search for topic cluster. At the same time, it provides the structured P2P network with effective approach to search for content based on complicated queries, and it realizes the semantic search and dramatically increases the search recall.

关 键 词：语义覆盖网络 结构化P2P网络 查全率 平均路径长度 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]