CAJ | 학술논문

为了提高分布式网络中各节点信任评价的准确度,提出了一种基于个体经验的信任模型.该模型通过引入经验因子和相对经验因子的方法,建立了新的信任评价体系.这种新的信任评价体系考虑了个体节点的差异问题,在计算节点的信任值时考虑了节点间的交互历史,这在一定程度上解决了由于节点的非对称性而导致的信任评价不准确的问题.算法分析表明:新模型能够针对不同的个体节点,采用不同的最大容忍评价偏差,并且对个体节点的反馈可信度进行更新时,采用不同的更新值,体现了节点的个性化特征,使信任评价更加准确合理.此外,所提出的新算法能够运用到多种信任模型中,具有很好的可扩展性.
위료제고분포식망락중각절점신임평개적준학도,제출료일충기우개체경험적신임모형.해모형통과인입경험인자화상대경험인자적방법,건립료신적신임평개체계.저충신적신임평개체계고필료개체절점적차이문제,재계산절점적신임치시고필료절점간적교호역사,저재일정정도상해결료유우절점적비대칭성이도치적신임평개불준학적문제.산법분석표명:신모형능구침대불동적개체절점,채용불동적최대용인평개편차,병차대개체절점적반궤가신도진행경신시,채용불동적경신치,체현료절점적개성화특정,사신임평개경가준학합리.차외,소제출적신산법능구운용도다충신임모형중,구유흔호적가확전성.
To improve the accuracy of node trust evaluation in a distributed network,a trust model based on the experience of individuals is proposed,which establishes a new trust assessment system by introducing the experience factor and the comparative experience factor.The new evaluation system considers the differences between individuals and interactive histories between nodes,which solves the problem that nodes have inaccurate assessments due to the asymmetry of nodes to a certain extent.The algorithm analysis indicates that the new model uses different deviating values of tolerance evaluation for different individuals and uses different updating values embodying node individuation when updating feedback credibility of individuals,which evaluates the trust value more reasonably and more accurately.In addition,the proposed algorithm can be used in various trust models and has a good scalability.