Research on behavior trust evaluation model of cloud servicesbased on membership theory
基于隶属度理论的云服务行为信任评估模型研究

Aiming at the problem of cloud users finding the appropriate cloud services which satisfy their performance preferences and special turst levels among a large number of cloud service providers, this paper proposed a behavior trust evaluation system of cloud services. First, it designed the trust evaluation system framework of cloud services, and established a trust evaluation model of cloud services based on membership theory. Next, it calculated the trust level of cloud services with the comprehensive trust cloud center of gravity evaluation(CCGE)method. Finally, the experiment results show that this model can build precise trust relationship between cloud users and cloud services based on users' performance demands.