网格环境中的综合信任评估模型  

Integrated Trust Evaluation Model in Grid Environment

作　　者：张楠[1] 张建华[1] 何蔚林[1] 严春燕[1] 

机构地区：[1]西南民族大学计算机科学与技术学院,四川成都610041

出　　处：《西南交通大学学报》2009年第1期32-35,共4页Journal of Southwest Jiaotong University

基　　金：国家社会科学基金资助项目(07BTQ013)

摘　　要：为解决网格环境的动态性和不确定性带来的安全问题,提出了网格环境中节点之间信任关系综合评估模型.在该模型中,用模糊逻辑描述信任关系,按照用户的关心程度对评估内容的每种属性赋予不同的权值,并综合考虑了用户以往与某节点的交往情况以及该节点的声望.在声望的计算中,根据推荐人的可靠性确定推荐因子,以避免通过推荐实施的欺骗.用算例验证了模型的有效性.To solve the security threaten due to in grid environment its instability and uncertainty, an integrated trust evaluation model was proposed to evaluate trust among grid nodes. In the model, a user describes trust with fuzzy logic, assigns weights to different attributes of a subject according to his concern degree, and considers historic communication record between him and concerned nodes as well as reputations of the nodes. Reputation of a node is dependent on a recommend coefficient that is determined according to the reliability of the recommender to avoid cheat from recommendation. An evaluation example was presented to show effectiveness of the model.

关 键 词：网格 安全 模糊逻辑 信任 模型 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]