基于博弈论的P2P激励机制的研究与设计  

Research and Design of An Incentive Mechanism of P2P Based on Game Theory

作　　者：李磊[1] 董健全[1] 

机构地区：[1]上海大学计算机工程与科学学院,上海200072

出　　处：《计算机技术与发展》2009年第5期5-8,157,共5页Computer Technology and Development

基　　金：上海市重点学科建设项目(J50103)

摘　　要：针对P2P系统中普遍存在的搭便车和公共悲剧问题,提出了一种基于博弈论的P2P服务质量激励机制。在分析节点在网络中的贡献和收益的基础上,通过引入激励值的概念来体现网络节点服务质量的高低,同时给出了有关节点服务质量四个方面的定义。实验表明,该激励机制能够有效地抑制节点的自私行为和提高网络的服务质量,并促使每个节点自发地共享自己的资源,从而构建一个良好的P2P环境。According to the universal questions like free riding and tragedy of common in the P2P systearts, propose incentive mechanism of P2P service quality based on the game theory. After analyzing the contributions and income foundations of nodes in the network, by driving the concept of the incentive value to incarnate the size of the service quality,give definitions about the grade of nodes＇ service quality from four aspects. The simulation experiments proves that this incentive mechanism can restrain the selfish actions of the nodes and improve the quality of the network＇s service effectively, also it can urge every node sharing their resources spontaneously, so a good P2P environment will be built.

关 键 词：P2P 激励机制 博弈论 激励值 服务质量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]