基于区域资源聚集的P2P网络  

P2P network based on regional resource aggregation

作　　者：郑晓健[1] 李彤[2] 付铁威[3] 

机构地区：[1]昆明理工大学津桥学院计算机科学与电子信息技术系,昆明650106 [2]云南大学软件学院,昆明650091 [3]昆明理工大学计算中心,昆明650093

出　　处：《信息技术》2014年第11期25-30,共6页Information Technology

基　　金：国家自然科学基金(61262024)

摘　　要：P2P网络规模的扩大使基于洪泛的检索方法产生严重的通信消耗问题,提出一种区域资源聚集模型,对非结构化对等网络中分散的资源进行分层聚集,形成大粒度的资源实体,从而显著缩减网络规模,并综合考虑影响资源检索命中率的多种因素,构造资源引用价值衰减函数来调节描述资源实体的引用价值向量和矩阵。检索时从区域资源簇中具有最大引用价值的资源组开始逐步寻找所要的资源。实验证明,该方法的消息转发范围得到控制、检索命中率有显著提高。Expanding the scale of network P2P leads to the flooding-based search methods producing a serious communication cost problem. This paper puts forward a unstructured peer-to-peer network resource aggregation, which the distributed resources in unstructured peer-to-peer networks can be aggregated hierarchically into the large granularity resource entity and the network size can be reduced significantly. With multiple factors that affect resource retrieval hits, the resource reference value decline function regulate the vector and matrix describing resource entity reference value. It begins to search the resource with the maximum reference value resource group in the resource clusters of the regional and this process will be gradually extended until it finds so far. The Simulations demonstrate it effectively limits the scope of the packets dissemination and improves the performance of the system.

关 键 词：P2P网络 资源聚集 引用价值衰减 消息扩散 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]