基于动态分组的开放分布系统信任度量与管理研究

doi:10.11959/j.issn.1000-436x.2015012

通信学报 ›› 2015, Vol. 36 ›› Issue (1): 100-110.doi: 10.11959/j.issn.1000-436x.2015012

基于动态分组的开放分布系统信任度量与管理研究

蒋黎明^1,²,刘志明^1,²,张琨^1,²,徐建^1,²,张宏^1,²

¹ 南华大学计算机科学与技术学院，湖南衡阳 421001
² 南京理工大学计算机科学与技术学院，江苏南京 210094

出版日期:2015-01-25 发布日期:2017-06-21
基金资助:
国家自然科学基金资助项目;湖南省科技计划基金资助项目;南华大学博士科研启动基金资助项目;南华大学重点实验室建设基金资助项目

Research on trust measure and management for open distributed systems based on dynamic grouping

Li-ming JIANG^1,²,Zhi-ming LIU^1,²,Kun ZHANG^1,²,Jian XU^1,²,Hong ZHANG^1,²

¹ School of Computer Science and Technology,University of South China,Hengyang 421001,China
² School of Computer Science and Technology,Nanjing University of Science and Technology,Nanjing 210094,China

Online:2015-01-25 Published:2017-06-21
Supported by:
The National Natural Science Foundation of China;The Project of Hunan Province Science and Technology Program;The Scientific Research Starting Foundation for Doctors of China in University of South China;The Construct Program of the Key Laboratory in University of South China

摘要/Abstract

摘要：

现有组信任模型在维护信任关系的稳定性与负载均衡能力方面存在局限性。为解决这些问题，提出一种稳定性增强的组信任模型SEGTM（stability enhanced group based trust model），以动态组构造与管理为基础，划分同组及跨组节点间的信任关系并给予了各自的度量方法，较好地解决了信任模型因信任网络拓扑动态改变而难以有效维护信任关系度量的准确性问题。仿真实验结果表明，该模型在应对网络拓扑动态变化时具有较好的稳定性和负载均衡能力，同时也能有效抵抗恶意节点的攻击。

关键词: 开放分布系统, 信任网络, 信任模型, 局部信任度

Abstract:

A stability enhanced group-based trust model(denoted by SEGTM) for open distributed systems was presented to solve the problems of not sufficiently maintaining trust relation between peers due to the dynamic changes in trust network topology.First,the formation and dynamic management of peers' group were depicted in detail,including nodes gathered into the same group with similar interests,competition for group head and nodes within the group leave in active or passive ways.Then,the trust relation in proposed model was categorized into three kinds and subsequently each solution for these kinds was also put forward.So,the problems of decline in accuracy of computational trust degree between peers due to the difference of peers' interests and low probability of repeated transactions between them were addressed.Simulation results show that the model not only enhances the fairness and stability in response to dynamic changes in network topology,but also can effectively resist the attacks of malicious nodes.

Key words: open distributed systems, trust network, trust model, local trust degree

蒋黎明,刘志明,张琨,徐建,张宏. 基于动态分组的开放分布系统信任度量与管理研究[J]. 通信学报, 2015, 36(1): 100-110.

Li-ming JIANG,Zhi-ming LIU,Kun ZHANG,Jian XU,Hong ZHANG. Research on trust measure and management for open distributed systems based on dynamic grouping[J]. Journal on Communications, 2015, 36(1): 100-110.

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参数名	描述	值
N	系统中Agent总数	可变
NS	每个Agent的最大邻居数	5
K	系统初始化群组个数	20
θ	节点与组的相似度	0.15
ξ	组成员数上限值	50
δ	可信节点的全局信任值下限	0.4
γ	推荐信任值误差上限	0.2
ω	不一致推荐交互周期数上限	4
H	组内节点交互数目门限值	10

基于动态分组的开放分布系统信任度量与管理研究

Research on trust measure and management for open distributed systems based on dynamic grouping

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