一种基于模糊理论的信任度评估模型  

A trust values evaluation model based on the fuzzy theory

作　　者：左双勇[1] 

机构地区：[1]广东培正学院基础课部,广东广州510830

出　　处：《云南民族大学学报（自然科学版）》2013年第2期132-135,共4页Journal of Yunnan Minzu University:Natural Sciences Edition

基　　金：国家自然科学基金(60963024)

摘　　要：信任是信息安全的重要保证.针对主观信任评估的不确定性,提出了一种基于模糊理论的信任度评估模型,运用模糊理论给出了信任度的等级机制和综合评估机制.为体现权重的不确定性,考虑权值依据评估值动态变化,利用变权法实现了主观信任评估的权重分配.根据综合评估得到的可信值,评估信任模型的可信度.实例分析验证了基于模糊理论的主观信任评估方法的可信性、有效性和合理性.Trust is an important guarantee for information security. According to the uncertainty of the subjective trust evaluation, a ＂Trust Values Evaluation Model＂ based on the fuzzy theory was proposed. Furthermore, the trust values level mechanism and comprehensive evaluation mechanism based on the fuzzy theory were given. Tak- ing into account the uncertainty of weight and the weights based on dynamic changes, and with the help of the vari- able weight method, the paper discussed the weight distribution of subjective trust evaluation. In terms of the credi- ble value of comprehensive evaluation, the credibility of the trust was evaluated. The exemplary analyses verified the reliability, validity and rationality of the subjective trust evaluation model based on the fuzzy theory.

关 键 词：模糊理论 信任度 变权法 信任等级 综合评估 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]