计算机工程与应用 ›› 2012, Vol. 48 ›› Issue (2): 109-112.

• 网络、通信、安全 • 上一篇    下一篇

分布式系统推荐信任模型研究

曲永花1,窦万峰1,2,刘 超3   

  1. 1.南京师范大学 计算机科学与技术学院,南京 210046
    2.江苏省信息安全与保密技术工程研究中心,南京 210097
    3.安徽大学 计算智能与信号处理教育部重点实验室,合肥 230039
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-01-11 发布日期:2012-01-11

Research on distributed system recommendation trust model

QU Yonghua1, DOU Wanfeng1,2, LIU Chao3   

  1. 1.School of Computer Science and Technology, Nanjing Normal University, Nanjing 210046, China
    2.Jiangsu?Engineering Center of Research on Information Security & Confidential Technology, Nanjing 210097, China
    3.Key Laboratory of Intelligent Computing Signal Processing, Ministry of Education, Anhui University, Hefei 230039, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-01-11 Published:2012-01-11

摘要: 针对分布式网络中节点请求推荐信任时需要选取推荐节点的问题,提出一种能够准确评估推荐节点推荐能力信任度的信任模型DSRT(Distributed System Recommendation Trust)。该模型在区分服务质量信任度和推荐能力信任度的基础上,研究了影响推荐能力信任度的节点相关性、频繁度和风险等因素,其中,相关性不仅考虑了节点的服务关心相似度,还考虑了节点的评价能力相似度,频繁度和风险的计算均考虑了请求节点和其他交互节点的不同。模拟实验表明,该模型能够准确选取推荐节点,提高节点交互的满意率。

关键词: 服务质量信任度, 推荐能力信任度, 频繁度, 风险

Abstract: In distributed network, a node requesting recommendation needs to select right recommendation node. This paper proposes a recommendation trust model. This model distinguishes service quality trust from recommended capacity trust, includs nodes’ correlations, frequencies and risk. In these elements, correlations are measured by service care similarity and assessment capacity similarity, and frequencies and risk are calculated considering different nodes. Experimental results demonstrate that the model can select recommendation nodes accurately and improve the satisfaction rate of the nodes interactions.

Key words: service quality trust, recommendation trust, frequencies, risk