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摘要
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。
This paper introduces a novel dynamic on-line time sensitive Peer-to-Peer network trust model. Three parameters are considered concurrently in this model, i.e., the direct trust, the recommendation trust, and the on-line time similarity. The adjustment factor is introduced in the trust value computation and update function. In addition, a novel record structure for the trust value is designed, and a well-designed time decaying function is developed as well. Experiments show that our model is better than the trust model without the consideration of on-line time similarity, and can improve the quality of service in P2P networks effectively.
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