论文部分内容阅读
针对网格环境的动态性和不确定性带来的安全问题,提出了一种以域为单位改进的信任模型。该模型对域内信任关系和域间信任关系分别采取不同的策略进行处理,充分考虑了网格的特点及时间衰减等因素,并从信任表达、提高信任准确度方面改进了模型,同时给出信任计算模型的信任值更新函数。模拟仿真实验及结果分析表明,这种信任模型能更加精确地评估实体之间的信任关系。
Aiming at the security problems caused by the dynamics and uncertainty of grid environment, a trust model improved by domain is proposed. The model adopts different strategies to deal with the trust relations in the domain and the trust relationships in the domain respectively. The model takes full account of the characteristics of the grid and the time decay, and improves the model from the perspective of trust expression and confidence, and gives the trust Calculate the model’s trust value update function. Simulation results and simulation results show that this trust model can evaluate the trust relationship between entities more accurately.