基于可信性理论的主观信任模型研究

通过对开放网络环境中主观信任评价方法的讨论，引入可信性理论来研究主观信任的模糊性，并提出了极大化期望值准则下的主观信任量化评价方法。针对主体信任属性评价值以及评价权重均为模糊变量的情形，给出了主观信任模糊期望值的模拟计算方法。实例分析表明，该方法对主观信任评价是可行和有效的。

Research of subjective trust model based on credibility theory

Through discussing the evaluation methods of subjective trust in open network, the fuzzy quality of subjective trust was investigated by introducing credibility theory, and the quantitative evaluation approach of subjective trust was presented based on the criteria of maximizing expected value. Then under the situation that the key attributes of subjects and the weight of evaluation were characterized as fuzzy variables, a simulating method was given to calculate the expected value of subjective trust. Finally, the presented approach was proved to be feasible and effective by an example.