基于区域簇的对等语义覆盖网络的构建

A P2P Semantic Overlay Network Architecture Based on Zone Clustering

非结构化P2P系统中搜索成本很高,特别是在带宽消耗和网络延迟方面。通过构建语义覆盖网络SON,对等网中的查询仅仅被转发给与查询词语最相似的子网络,这样可以大幅度地降低搜索代价、提高查询质量。本文提出一种新的、分布式地、自组织地构造语义覆盖网络的新方法,通过创建本地簇,构建区域,再逐渐向上合并本地簇形成区域簇,最终形成基于区域簇的语义覆盖网络结构。

Unstructured P2P systems suffer from high search costs in terms of both consumed bandwidth and latency. In Semantic Overlay Networks （SONs）, where peers containing relevant information are grouped together, queries can be forwarded only to the most similar SONs to the given query, thus reducing the query cost and, at the same time, increasing the quality of results. In this paper, we propose a novel scalable approach for distributed SON creation in unstructured P2P networks, and zone clustering algorithms for recursively merging clusters of peers and creating links between peer groups, in order to generate well-connected SONs with similar content that span the entire P2P network.