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针对P2P模式下个人图书馆共享中的激励问题,提出了一种在线时间感知的P2P网络动态信任模型,该模型结合直接信任、推荐信任以及在线时间相似度三个参数对节点进行综合评价,并在信任值计算和更新中引入调节因子。另外,设计了一种新的信任值存储结构,并提出了一种较合理的时间衰减函数。分析及仿真实验表明,该模型可以有效地提高图书馆系统P2P网络的服务质量。
Aiming at the motivation problem of P2P sharing in personal library, this paper proposes an online time-aware P2P network dynamic trust model which combines the three parameters of direct trust, recommendation trust and online time similarity to evaluate the nodes comprehensively. Adjustment factors are introduced in the calculation and updating of trust values. In addition, a new trust value storage structure is designed and a more reasonable time decay function is proposed. Analysis and simulation results show that this model can effectively improve the service quality of P2P system in library system.