一种基于射线投影法的信任管理模型  

Trust management model based on radial projection algorithm

作　　者：李正[1,2] 郭玉翠[1] 周亚建[2] 

机构地区：[1]北京邮电大学理学院,北京100876 [2]北京邮电大学信息安全中心,北京100876

出　　处：《计算机应用研究》2012年第2期672-675,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(60973146);山东省自然科学基金资助项目(ZR2009GM036)

摘　　要：针对现有信任管理模型在普适性和扩展性方面的不足,建立了一种基于射线投影法的信任管理模型。该模型定义了推荐可信度和风险因子,给出了交易额度、相关性因子、衰减因子和连续奖惩因子的计算方法,利用公共存储区域优化节点的运算量和存储空间。仿真实验表明,本模型提高了信任的预测精度,增强了区分不同行为节点的能力,在满足模型普适性和扩展性的同时,能够准确地识别恶意节点,保证了模型的有效性和健壮性。Aiming at the lack of universality and scalability in current trust management models,this paper proposed a trust management model based on the radial projection algorithm.This model defined the recommendation credibility degree and risk factor,and gave the formulas of transaction amount,correlation factor,attenuation factor and continuous reward factor.It used the public storage area to save nodes＇ computation and introduced storage space.The simulation and analysis results show this model not only improves the prediction accuracy of trust to meet universality and scalability,but also enhances the ability to distinguish between nodes of different acts,which can accurately identify malicious nodes,to ensure effectiveness and robustness.

关 键 词：信任 信任管理模型 灰预测 射线投影法 推荐可信度 风险因子 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]