摘要
非结构化P2P网络应用广泛,每个结点被赋予相同的权利和义务.但其拓扑结构差异较大,网络中各节点之间存在很大的差异性,容易造成单点失效和网络带宽瓶颈.对衡量非结构化P2P网络的节点能力互异性的影响因素和评价规则进行了研究,并提出了一种新型资源搜索算法———节点能力自适应算法(Node Ability Automatically Fit,以下简称NAAT),给出了NAAT的算法定义、执行步骤、算法伪代码和实验测评.实验结果表明,相比于洪泛机制和索引目录机制,NAAT算法明显提高了系统的资源搜索效率.
Unstructured P2P has been widely applied, each peer has the same right and duty. But the network topology structure is quite uncertain, and the ability of each peer is in great difference, which can easily lead to single point of failure and bandwidth bottleneck. In this paper, the prineiple of evaluating peer＇s capacity was discussed, and a new search mechanism Node Ability Automatically Fit （thereinafter referred to as NAAT）has been proposed, and then the definition, performing steps, algorithms code and experimental test of NAAT was showed. The experimental result shows that NAAT makes the resources search more efficiency, compared to flooding and index search mechanism. 7figs., hab., 9refs.
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2009年第2期61-65,共5页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
湖南省自然科学基金资助(07JJ6104)
