云环境下可信服务的时效策略  

Time Effectiveness in Trust Services Under Cloud Environment

作　　者：顾鑫[1] 徐正全[1] 涂洪涛[2] 刘小俊[1,3] 

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号430079 [2]武汉软件工程职业学院计算机与软件学院 [3]黄冈师范学院物理与电子信息学院

出　　处：《武汉大学学报（信息科学版）》2013年第5期626-630,共5页Geomatics and Information Science of Wuhan University

基　　金：国家973计划资助项目(2011CB302306);国家863计划资助项目(2007AA12020204)

摘　　要：针对宿主式云计算在可信服务中缺乏高可用性的特点,从可信服务评价的角度,提出了基于宿主云时效策略,并建立了时效模型。通过采用阈值分隔、诱导有序加权平均(IOWA)算子、透明信任评价和动态优先级调度思想,对宿主云服务节点的可信度做出动态计算。实验结果表明,宿主云时效策略能优先选择可信度高的服务资源,在一定程度上提高了宿主云服务安全应用的稳定性。Dealing with the problem of lacking high availability in trust services under hosting cloudcomputing environment,an time effectiveness strategy and an time effectiveness model for hostingcloud computing were proposed from the perspective of service evaluation in trust.It dynamically calculate trustworthiness degree of hosting cloud service node by utilizing thresholdmethods,IOWA（induce ordered weighted averaging）operators,transparent trust evaluation and dynamic level scheduling algorithm.Our experimental results showed that this hosting cloud time effectiveness strategy can choose high credibility service resources in priority,and enhanced the stability and availability of cloud services application to some extent.

关 键 词：宿主云 时效策略 可信评估 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]