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计算机工程 ›› 2008, Vol. 34 ›› Issue (3): 18-20. doi: 10.3969/j.issn.1000-3428.2008.03.007

• 博士论文 • 上一篇    下一篇

基于可信度的传递模式信誉值计算改进算法

郝黎明1,杨树堂1,2,陆松年1,2,陈恭亮2   

  1. (1. 上海交通大学电子工程系,上海 200240;2. 上海交通大学信息安全工程学院,上海 200240)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-02-05 发布日期:2008-02-05

Improved Algorithm of Transitive Mode Reputation Value Computing Based on Certain Factor

HAO Li-ming1, YANG Shu-tang1,2, LU Song-nian1,2, CHEN Gong-liang2   

  1. (1. Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240; 2. School of Information Security Engineering, Shanghai Jiaotong University, Shanghai 200240)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-02-05 Published:2008-02-05

摘要: 针对信誉系统中的传递模式信誉值计算算法,分析了该算法在归一化、通过相对值计算全局信誉值(GRV)以及评价函数标准不同时引起的信息损失问题和节点可信度不确定性带来的问题,基于可信度方法对该算法进行了改进。仿真实验结果表明,改进后的算法计算所得到的GRV序列比理想值的欧氏距离更小,提高了恶意节点识别能力。

关键词: 传递模式, 信誉值, 可信度, 不确定性推理

Abstract: Focussing on the transitive mode reputation computing algorithm in reputation systems, the information losing problem caused by normalization, computing Global Reputation Value (GRV) using relative value, and the difference of rating function criteria, and the problem caused by indefinite inference of peer’s certain factor are analyzed. This algorithm is improved based on certain factor. Simulation results show that the Euclidean distance between the computed GRV sequence and ideal value is much smaller by using improved algorithm, which enhances the ability to discover malicious peers.

Key words: transitive mode, reputation value, certain factor, indefinite inference

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