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一种结构化P2P网络拓扑匹配的通用算法
引用本文:殷苗苗,陈世平.一种结构化P2P网络拓扑匹配的通用算法[J].计算机系统应用,2012,21(4):135-138.
作者姓名:殷苗苗  陈世平
作者单位:上海理工大学光电信息与计算机工程学院;上海理工大学信息化办公室
基金项目:国家自然科学基金项目(61170277);上海市教委科研创新重点项目(12zz137);上海市重点学科建设项目(S30504)
摘    要:与非结构化P2P网络相比,结构化P2P网络具有良好的可扩展性、鲁棒性。但是结构化P2P覆盖网络是直接建立在逻辑网络之上,没有过多地考虑底层物理网络拓扑结构,导致逻辑拓扑结构与物理拓扑结构严重不匹配。本文提出一种新的协议无关的拓扑匹配算法,将现有的界标节点、自适应匹配算法与IP分配策略相结合构建初始拓扑结构,优化节点交换算法来维护拓扑结构。模拟实验表明,本算法提高了网络的拓扑匹配度,具有更低的通信开销。

关 键 词:结构化对等网络  覆盖网络  拓扑结构  时间延迟  节点交换
收稿时间:2011/7/31 0:00:00
修稿时间:2011/10/23 0:00:00

Generic Topology Matching Method Based on Structured P2P Network
YIN Miao-Miao and CHEN Shi-Ping.Generic Topology Matching Method Based on Structured P2P Network[J].Computer Systems& Applications,2012,21(4):135-138.
Authors:YIN Miao-Miao and CHEN Shi-Ping
Affiliation:1,2 1(School of Optical-Electrical &Computer Engineering,University of Shanghai for Science &Technology,Shanghai 200093,China) 2(Office of Information,University of Shanghai for Science & Technology,Shanghai 200093,China)
Abstract:Compared with the unstructured P2P networks,structured P2P networks have good expansibility and robustness.But structured P2P overlay network is directly based on logic network,not too much above the underlying physical network topology structure,which causes a serious topology mismatching between logical topology structure and physical topology structure.About the question,this paper proposed a protocol-independent topology matching method,by combining the existing beacons node,adaptive matching algorithm with IP distribution strategy to construct the initial topological structure,and by optimizing node switching to maintenance the network topology.Simulation experiments show that the algorithm improve the matching degree of the network topology,and meanwhile with lower traffic cost.
Keywords:web information extraction  knowledge presentation  data intensive web pages  ontology-based keyword library
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