Peer-to-Peer环境下多粒度Trust模型构造  

Construction of Peer-to-Peer Multiple-Grain Trust Model

作　　者：张骞[1] 张霞[1] 文学志[1] 刘积仁[1] Ting Shan 

机构地区：[1]东北大学计算机软件国家工程研究中心,辽宁沈阳110179 [2]School of Information Technology and Electronical Engineering,University of Queensland,Australia

出　　处：《软件学报》2006年第1期96-107,共12页Journal of Software

基　　金：国家自然科学基金;江苏省自然科学基金~~

摘　　要：信任是多方面的,在不同的应用场景中,同一节点在不同领域具有不同的可信度.现有信任模型粒度过于粗糙,不能很好地解决同一Peer节点在不同领域、不同方面的可信度计算问题.据此,提出一种新的Peer-to-Peer环境下的多粒度信任模型,并给出该模型的数值分析和分布式实现方法.分析及仿真结果表明,该模型与已有模型相比,在可信度计算的粒度、模型的安全性等方面有较大的提高.Trust is multi-faceted and the peer＇s needs are different in different situations. A peer may need to consider its trust in a specific domain of another peer＇s capability or in a combination of multiple domains. Current Peer-to-Peer trust model could not promise the trust computation of different domains. This paper presents a novel Peer-to-Peer multiple-grain trust model and gives a distributed implementation method, which considers the trust computation of different domains. Mathematic al analyses and simulations show that, compared to the current trust model, the proposed model is more precis e on trust computation of multiple domains and more robust on trust security problems.

关 键 词：对等网络 本体 信任树 档案点 多粒度信任模型 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]