文献类型：会议论文

英文题名：Security of opinion dynamics in social networks

作者：Gao, Long[1];Yang, Wen[1];Zhao, Zhiyun[1];Wang, Xiaofan[2,3]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Control & Optimizat Chem Proc, Shanghai 200237, Peoples R China;[2]Shanghai Jiao Tong Univ, Dept Automat, Shanghai 200240, Peoples R China;[3]Shanghai Univ, Sch Mechatron Engn & Automat, Shanghai 200072, Peoples R China

会议论文集：15th International-Federation-of-Automatic-Control (IFAC) Symposium on Large Scale Complex Systems (IFAC LSS)

会议日期：MAY 26-28, 2019

会议地点：Delft Univ Technol, Delft, NETHERLANDS

主办单位：Delft Univ Technol

语种：英文

外文关键词：Opinion dynamic; attack-defense environment; network security; social network

摘要：In this paper, we consider the security problem of opinion dynamics in attack-defense environment in social networks. First, we propose an opinion dynamics model, which is composed by attackers, defenders and the masses. In the proposed model, a set of attackers controlled by the agent with hostile opinion sends malicious opinion to their neighbors with a certain probability, and the defenders are activated by the agent with right opinion at a triggering time to lead the opinions of the masses to a safe zone. Second, we provide a sufficient condition to ensure the convergence of the expected opinions of the system. We also give the method to seek a lower bound of the opinions spread by the defenders at each time step while keeping the opinions in safe situation. Finally, we provide a numerical example to verify the main results. (C) 2019, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.