基于蚁群算法的动态信任模型研究

Research on Dynamic Trust Model Based on Ant Colony Algorithm

信任度在分布式环境中具有不确定性,而传统的信任模型都将信任度定义为布尔型变量,这种信任度无法量化地描述实体间的信任强度。提出将信任度定义为一个非布尔型变量,并使信任度关联于时间和交互事件,引入信任矩阵和信任信息素的概念构造一种新的动态信任模型,同时对模型进行了描述并给出算法的关键步骤。该模型不仅可以实时度量实体间的信任关系以及实体的信任度,而且在分布式环境中具有较好的可扩展性,具有一定的理论价值和应用价值。

The thesis introduces idea and basic principles of the ant colony algorithm,and applies the ant colony algorithm in a new research area.This paper presents a new dynamic trust model,gives model description by importing trust pheromone.It describes the relationship of the entities＇ trust as an undirected graph.Also,the important steps and method of the algorithm are given.In this model,the real-time trust relationship can be quantified.This model effectively improves extensibility and has definite theoretic and realistic values.