P2P网络中基于激励机制的副本策略

doi:10.3969/j.issn.0253-2778.2010.10.014

中国科学技术大学学报 ›› 2010, Vol. 40 ›› Issue (10): 1087-1095.DOI: 10.3969/j.issn.0253-2778.2010.10.014

P2P网络中基于激励机制的副本策略

郭良敏

1.中国科学技术大学计算机科学与技术学院,安徽合肥 230027;2.安徽师范大学计算机科学与技术系,安徽芜湖 241003

收稿日期:2009-09-09 修回日期:2010-05-14 出版日期:2010-10-31 发布日期:2010-10-31
通讯作者: 杨寿保
作者简介:郭良敏,女,1980年生，博士生. 研究方向：网格与P2P计算. E-mail: lmguo@mail.ustc.edu.cn
基金资助:
国家自然科学基金(60673172)和中国高技术研究发展（863）计划(2006AA01A110)资助.

Replication strategy based on incentive mechanism in peer-to-peer networks

GUO Liangmin

1.School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China; 2.Department of Computer Science and Technology, Anhui Normal University, Wuhu 241003, China

Received:2009-09-09 Revised:2010-05-14 Online:2010-10-31 Published:2010-10-31

摘要/Abstract

摘要： 为了在P2P网络的副本技术应用中调动节点主动提供存储空间的积极性、增强节点间的相互合作,借鉴信息经济学中委托-代理关系的相关知识以及激励的概念,提出基于激励机制的副本策略,从而提高P2P网络的性能.模拟实验表明,所提出的基于激励机制的副本策略可以削弱由于节点间的不合作所引起的不能成功创建文件副本的影响,可以在一定程度上提高网络的搜索性能.与目前几种经典的副本策略相比,所提出的策略降低了网络的搜索响应时间,提升了搜索的成功率,并使得节点的负载相对达到均衡.

关键词: 副本, 激励机制, 委托节点, 代理节点, P2P网络

Abstract: To encourage peers in P2P network to provide their storage space saving replications and strengthen cooperation between them, the replication strategy based on incentive mechanism was put forward using information economics about principal-agent relationship and the incentive concept for reference. The experimental results show that the proposed replication strategy can weaken the negative effect brought about by noncooperation between peers as far as possible to create replications successfully, and indeed improve search performance of P2P networks to a certain extent. Compared with classical replication strategies, the new method can reduce search response time, promote search success ratio and balance peers load.

Key words: replication, incentive mechanism, principal-peer, agent-peer, P2P network

郭良敏，杨寿保，路卫娜，张瑞，武斌. P2P网络中基于激励机制的副本策略[J]. 中国科学技术大学学报, 2010, 40(10): 1087-1095.

GUO Liangmin, YANG Shoubao, LU Weina, ZHANG Rui, WU Bin. Replication strategy based on incentive mechanism in peer-to-peer networks[J]. Journal of University of Science and Technology of China, 2010, 40(10): 1087-1095.

P2P网络中基于激励机制的副本策略

Replication strategy based on incentive mechanism in peer-to-peer networks

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