基于主观逻辑的群体信任模型

Group trust model based on subjective logic

目前信任模型的研究仅仅涉及一对一的个体信任关系,并没有充分考虑对一对多、多对一以及多对多的群体信任关系的支持。从信任的主观性角度出发,提出了4种基本群体约束模式及其嵌套复合来刻画群体构成约束,在此基础上提出了一种基于主观逻辑的群体信任模型,给出了4种基本约束模式及其嵌套复合的直接信任度和推荐信任度的度量公式,对于群体信任关系,特别是软件群体的信任关系提供了很好的支持。通过模型的表达能力和有效性分析表明:群体信任模型具有较好的适用性和实用性。

Today＇s dynamic trust model only research one to one trust relation and there are no researches about one to many, many to one, many to many trust relation. Based on subjective logic, four basic group constraint patterns and their nesting to compose a group were proposed at the point of view of trust＇s subjectivity and supports group trust relation. A group dynamic trust model based on these four basic constraint patterns was proposed, and direct trust degree and recommendation trust degree formulae of basic constraint patterns and their nesting were brought up. The model has good applicability and practicability through model＇s expressive power analysis and model＇s validity analysis.