开放环境下基于声誉记录的信任模型及实现  

Trust Model in Open Environment Based on Reputation Records and Its Implementation

作　　者：荆博贤[1] 徐锋[1] 陶先平[1] 吕建[1] 

机构地区：[1]南京大学计算机软件新技术国家重点实验室,南京大学计算机软件研究所,江苏南京210093

出　　处：《电子学报》2007年第B12期160-164,共5页Acta Electronica Sinica

基　　金：国家自然科学基金（No.60603034）;国家863高技术研究计划（No.2007AA012140）

摘　　要：信任管理被认为是一种适宜解决开放环境下安全问题的新方法．但现有的信任模型难以应对信任炒作和恶意诽谤的行为，另外，在模型的实现上存在着否定信任信息传播困难，难以防止信任信息篡改等问题．本文基于对信任概念的研究，给出了一个基于声誉记录的信任模型，模型按事务的重要程度来采纳声誉信息，能够有效降低实体问信任炒作和诽谤行为所带来的影响．在系统实现过程中，通过标签机制促进了否定信任信息的传播，并有效防止对信任信息的恶意篡改．最后，通过在电子商务场景中的应用，初步验证了模型的合理性，和标签机制的有效性．Trust management is widely used to guarantee security in the open environment. The existing trust models have difficulties in collecting trust information as well as detecting the hype in reputation. Besides, in application it is hard for the negative recommendation to be propagated and it can hardly prevent the juggling of the trust information. Based on the existing research on the notion of trust we design a novel trust model based on reputation records which can greatly weaken the effect of the hype and libel behavior by concerning the context importance of ach reputation record in trust evaluation. In application we use the label mechanism to make negative trust information well propagated and guarantee any modification of the reputation information would be detected. At last we apply it to an agent based e-business scenario and primarily validate the rationality of the model and the va- lidity of the label method.

关 键 词：信任模型 信任管理 声誉 开放环境 防炒作 

分 类 号：TP302.1[自动化与计算机技术—计算机系统结构]