网格信任评价审计及控制  

Audit and control of trust evaluation in grid

作　　者：何廷年[1] 马满福[1] 李勇[1] 曲伟丽[1] 

机构地区：[1]西北师范大学数学与信息科学学院,兰州730070

出　　处：《计算机应用》2010年第1期255-258,共4页journal of Computer Applications

基　　金：教育部科学技术研究重点项目(208148);甘肃省科技攻关项目(2GS064-A52-035-03)

摘　　要：客观地评价资源是信任模型有效的基础,而评价的主观性则使其难以实现,审计成为维护评价客观性的重要方法。针对信任评价,提出了一个带有审计功能的评价模型,通过采集调度数据、标准化、距离计算、异常评价发现和评价修正等步骤,实现评价的审计和对评价的控制。讨论了审计周期,给出了审计算法。实验表明,所提出的方法对用户信任评价的审计是有效的,发现了评价中存在的问题并在后来的评价中加以修正,同时促进了系统的稳定性和吞吐量。Objective evaluation of trust value is the basis of trust model validity, but the subjectivity of evaluation makes it hard to achieve. Audit is one of the effective ways to this problem. In this paper, the authors presented an approach of trust evaluating model with audit function, by the support of basis running data. The process included standardization, distance calculating, and abnormity evaluation detecting and correcting, thus implementing the control of evaluation. As to the model requirement, the authors analyzed the refresh periods of audit, and an audit algorithm was put forward. Finally simulations were performed to validate the audit. The experimental results show that the audit is efficient on trust model stability and at the same time is helpful with the throughput of grid.

关 键 词：网格监测体系结构 信任模型 欧式距离 资源使用记录 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]