| 基于博弈论的P2P网络研究 |
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| 引用本文： | 赵晨.基于博弈论的P2P网络研究[J].信息技术,2007,31(6):90-92,95. |
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| 作者姓名： | 赵晨 |
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| 作者单位： | 南京邮电大学,南京,210003 |
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| 摘 要： | 在P2P网络中，节点可以根据它们的效用函数来决定是否接受服务。效用函数方法可以作为激励机制，促进节点之间的资源共享和相互提供服务。某个节点从其他节点获得服务的可能性直接同它的效用函数值相联系，并且节点要提高它的效用函数值的唯一方法就是为其他节点提供服务，因为可以最大限度地降低空载现象的发生。
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| 关 键 词： | P2P系统 博弈论 纳什均衡 激励机制 效用值 |
| 文章编号： | 1009-2552（2007）06-0090-03 |
| 修稿时间： | 2006-10-13 |
P2P network based on game theory |
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| ZHAO Chen.P2P network based on game theory[J].Information Technology,2007,31(6):90-92,95. |
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| Authors: | ZHAO Chen |
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| Affiliation: | Nanjing University of Posts and Teleconununicatiom,Nanjing 210003, China |
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| Abstract: | This paper uses game theory to study nodes' behavior in peer-to-peer networks when nodes receive service based on their reputation.Reputation is used as a mechanism to incentive nodes to share resources and provide services to others.The probability of a node obtaining service is directly proportional to its current reputation,and the only way to enhance reputation is by serving others.Because,the problem of free-riding is minimized. |
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| Keywords: | P2P system game theory Nash equilibrium incentives reputation |
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