北京航空航天大学学报 ›› 2004, Vol. 30 ›› Issue (11): 1125-1128.

• 论文 • 上一篇    下一篇

一种开放网络环境中的不确定信任模型

何锐, 牛建伟, 胡建平   

  1. 北京航空航天大学 计算机学院 北京 100083
  • 收稿日期:2004-06-25 出版日期:2004-11-30 发布日期:2010-09-24
  • 作者简介:何 锐 (1976-),男,重庆黔江人,博士生, harry.he@mail.edu.cn.
  • 基金资助:

    国家863基金资助项目(200112052)

Modeling trust with uncertainty for open networks

He Rui, Niu Jianwei, Hu Jianping   

  1. School of Computer Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2004-06-25 Online:2004-11-30 Published:2010-09-24

摘要: 开放网络环境中的信任关系是一种不确定关系,所以在建立信任模型时,需要对信任的不确定性进行建模.为此,提出了一种新的基于云模型的信任模型.通过用一维正态云来对实体之间的信任关系进行描述,本模型将实体之间的信任程度和信任的不确定性统一起来.在此基础上,还提出了基于云的信任关系的传播和合并算法;并通过仿真实验说明,该模型在开放网络环境中具有良好的效果.

Abstract: Since trust relationships are uncertain in open networks, it is necess ary to consider uncertainty when modeling trust.A novel trust model was proposed based on the cloud model, which was a useful tool to describe uncertain concept . Modeling trust with cloud, the proposed model could present trust degree and u ncertainty degree in a uniform form. Based on such a definition of trust, algori thms to compute propagated trust clouds and aggregated trust clouds were propose d, which were needed in the case of trust reasoning. With simulation experiment s, the proposed model were compared with the other two trust models. The results show the cloud-based trust model performs much better in open networks, especi ally in helping entities to cooperate with each other.

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