CAJ | 학술논문

分布式网络中,对于某一节点所提供的相同质量的服务,不同的访问节点对该节点的信任评价存在差异.导致这种差异的原因,一方面与访问节点的直接交互经验有关,另一方面与访问节点的兴趣爱好及对服务评价的理解角度有关(有的节点对服务的评价看重的是下载速度,而有的节点则更看重服务的安全可靠等),这种差异必然影响信任评价的准确性.为了消除个体节点信任评价差异所产生的影响,通过引入经验因子的方法和采用多元组的信任信息记录方法,提出了一种基于个体经验的多粒度信任模型.实验分析表明,该模型在信任评价的粒度、信任评价的准确性等方面有较大的提高.
분포식망락중,대우모일절점소제공적상동질량적복무,불동적방문절점대해절점적신임평개존재차이.도치저충차이적원인,일방면여방문절점적직접교호경험유관,령일방면여방문절점적흥취애호급대복무평개적리해각도유관(유적절점대복무적평개간중적시하재속도,이유적절점칙경간중복무적안전가고등),저충차이필연영향신임평개적준학성.위료소제개체절점신임평개차이소산생적영향,통과인입경험인자적방법화채용다원조적신임신식기록방법,제출료일충기우개체경험적다립도신임모형.실험분석표명,해모형재신임평개적립도、신임평개적준학성등방면유교대적제고.
In distributed networks,the trust evaluation for the same quality services of one node conducted by different access nodes is different.On the one side.it has relation to the direct mutual experience of the accessing node.And on the other side.it has relation to the accessing node's interest and opinion about the service evaluation.Some nodes think a lot of the download speed,while some other nodes put more emphasis on the security and reliability of the service,which cannot but lead to influence the veracity of trust evaluation.In order to eliminate the infection resulted from the trust evaluation difference of individual nodes,a multi-granularity trust model based on individual experience was put forward.In this model,experience factor and multi trust information recording methods were employed.Experiment and analysis show that the proposed model has better improvement in granularity and veracity of trust evaluation.