An Uncertainty Enhanced Trust Evolution Strategy for e-Science

来源 :Journal of Computer Science & Technology | 被引量 : 0次 | 上传用户:gyivan0513
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Resources shared in e-Science have critical requirements on security.Thus subjective trust management is essential to guarantee users’ collaborations and communications on such a promising infrastructure.As an important nature of subjective trust,uncertainty should be preserved and exhibited in trust definition,representation and evolution.Consider the drawbacks of existing mechanisms based on random mathematics and fuzzy theory,this paper designs an uncertainty enhanced trust evolution strategy based on cloud model theory.We define subjective trust as trust cloud.Then we propose new algorithms to propagate,aggregate and update trust.Furthermore,based on the concept of similar cloud,a method to assess trust level is put forward.The simulation results show the effiectiveness,rationality and efficiency of our proposed strategy. Resources shared in e-Science have critical requirements on security .hus subjective trust management is essential to guarantee users’ collaborations and communications on such a promising infrastructure. As an important nature of subjective trust, uncertainty should be preserved and exhibited in trust definition, representation and evolution. Carsider the drawbacks of existing mechanisms based on random mathematics and fuzzy theory, this paper designs an uncertainty enhanced trust evolution strategy based on cloud model theory. We define subjective trust as trust cloud. Chen we propose new algorithms to propagate, aggregate and update trust.Furthermore, based on the concept of similar cloud, a method to assess trust level is put forward. The simulation results show the effiectiveness, rationality and efficiency of our proposed strategy.
其他文献
运用1个样/1km2、1个组合样/4km2,1个样/(100~1000)km2、1个样/(1000~10000)km2的采样密度系统研究了泛滥平原沉积物的超低密度采样代表性。通过对Sb、As、Ag、Pb、Sn、Na2O元素的地球化学分布模式,W的地球化学特征在不同采样密度间的信息传
固体~(13)C核磁共振技术是研究物质结构的有效方法,本文是在高磁场(400 MHz)下,应用 Solid ~ (13) C NMR is an effective method to study the structure of matter. In th
本文通过对哈尔里克变质地带的变质岩石学,变质矿物及矿物包裹关系的研究,确定该变质带的形成曾经历了晚古生代中、晚石炭世的高温—低压型的区域热变质作用和晚石炭世末期中温
System administrator deals with many problems,as computing environment becomes increasingly complex.Systems with an ability to recognize system states and adapt
建立了层测深理论曲线正演模拟的数学模型,结合三层和四层地电模型层测深视电阻及视电阻率理论曲线的正演计算,研究了层测深曲线特征和解释方法,同时介绍了煤矿井下层测深法的应
近年来中国二叠纪古植物学研究简述刘照华李承森耿宝印(中国科学院植物研究所,北京100093)ADVANCESOFPALAEOBOTANICALRESEARCHESOFPERMIANINCHINALiuZhao-huaLiCheng-senGengB... Study on Permian Paleobotany in China in Recent Years  Liu Zhaohua Li Chengse
本文介绍了Infineon公司专为Irom>300A中大电流应用设计的最新的650V IGBT4。与600V IGBT3相比,该器件在关断时具有更好的软度和更高的阻断电压能力。实现上述特性的主要措施
运用综合地质、地球物理勘探方法对山东栖霞百里店地区进行了金矿的探查.分析探查结果,得出在百里店及其临近地区可能存在一大型金矿. Using comprehensive geophysical and ge
根据断层深部不均匀滑动反演方法,利用6期大地形变资料,反演计算了唐山地震断层在震前、震时、震后共5个不同时间段的运动状况.其结果体现了地震断层由震前加速运动、震时突发错动
针对井周的非均质地层模型,利用三维有限元方法模拟了方位梯度电极系的测井响应。在非均质程度比较小的情况下,各个方位上的响应之间差别不大,与真实的电阻率分布差别也不大;反之