电子商务系统的信任建模与评估

电子商务系统的信任建模与评估

[摘 要]：针对P2P 电子商务系统的安全问题，提出一种基于声誉的信任模型。通过引入影响信任度的信任因素改进局部声誉与全局声誉的计算方法，准确地反映出节点的信任度，降低信任度计算的时间复杂度。实验结果表明，该模型相比现有的信任模型，能提高系统交易成功率，并有效用于P2P 电子商务系统中。

[关键词]：P2P 系统；电子商务；信任模型；声誉

Trust Modeling and eva luation in E-commerce System

Sun Hu

【Abstract】For the problem of security in P2P e-commerce system, this paper provides a novel reputation-based trust model. By introducing many comprehensive trust factors in computing trust level and improving the calculation methods of the local reputation and global reputation, this model can not only accurately reflect the node’s trust level, but also reduce the time complexity in computing trust level. Experimental results show that the trust model can improve the rate of successful transaction compared to the existing trust models, and can be effectively applied to the P2P e-commerce system.

【Key words】P2P system; e-commerce; trust model; reputation