摘要： 根据网格资源信任评价的主观性特点，引入一种网格环境下的资源信任审计模型。对资源信任评价值进行异常判定并对异常评价值进行追踪，查找异常原因。在此基础上，给出审计反馈和审计算法。该模型降低用户不公正评价带来的影响，使资源信任评价更准确地反映其服务质量，以便用户做出正确选择。实验结果表明，该模型的引入可提高资源的利用率，保证调度的成功率，缩短任务的平均完成时间，进而提高系统的稳定性。

关键词: 网格QoS, 信任评价, 审计, 反馈

Abstract: According to the subjectivity of trust evaluation of grid resources, a model of resources trust audit is introduced. The method of exception judgment to the trust evaluation value of resources is introduced, based on the judgment, exception results are traced, and the main factor on every exception value are found. The audit feedback to trust evaluation model is provided. The audit algorithm is described based on the model. The model reduces the influence of biased evaluations to resource by some users and makes trust evaluation value reflect the QoS of resources more exactly, which makes the users make right choices. Experimental results show that the audit model can improve the utility rate of resources, ensure the success rate of scheduling, reduce the average completion time of the task, and improve the stability of system.

Key words: grid QoS, trust evaluation, audit, feedback

中图分类号: 

• TP311