太赫兹科学与电子信息学报, 2015, 13 (2): 308, 网络出版: 2016-01-25  

一种新的基于 P2P系统的用户行为满意度分析模型

A new model of user-behavior satisfaction analysis based on P2P systems
作者单位
复旦大学信息科学与工程学院,上海 200433
摘要
长期对等( P2P)系统中的搭便车行为使得系统渐渐失去了原来分布式共享的特点。为了抑制这种行为,提出了一种新的 P2P系统评价模型。该模型基于博弈论抑制模型和节点行为的激励模型的特点,对用户行为采用信誉值进行评价,信誉值的表征体现用户阶段性的表现,并采取一定的限制抑制自私节点的产生。将该模型内的各种激励机制进行数学建模,并利用自回归(AR)模型进行拟合。仿真结果表明,在该模型下,系统的评价呈周期性变化,满意度趋于平稳,在 30%左右。
Abstract
Long-term free-riding behavior of Peer to Peer(P2P) systems makes the system gradually lose its original distributed shared characteristics. In order to prevent selfish behaviors, a new evaluation model for P2P systems is proposed based on the characteristics of game theory suppression model and incentive-based node behavior model. The reputation value which reflects the period performance of users is adopted to characterize user-behavior, and some confinement conditions are set to prevent generating selfish nodes. The various kinds of incentive mechanisms in P2P systems are mathematically modeled and fitted with Auto-Regressive(AR) model. The simulation results based on this model show that the behavior of the system evaluation changes periodically; and the satisfaction is stabilized to a smooth number, 30%.

陈碧韵, 倪卫明. 一种新的基于 P2P系统的用户行为满意度分析模型[J]. 太赫兹科学与电子信息学报, 2015, 13(2): 308. CHEN Biyun, NI Weiming. A new model of user-behavior satisfaction analysis based on P2P systems[J]. Journal of terahertz science and electronic information technology, 2015, 13(2): 308.

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