关键词: 网格, 信任模型, 审计

Abstract: 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.

Key words: Grid, Trust Model, Audit