Dynamic properties of rumor propagation model induced by L´evy noise on social networks  

作　　者：Ying Jing Youguo Wang Qiqing Zhai Xianli Sun 景颖;王友国;翟其清;孙先莉(School of Science,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;School of Telecommunication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]School of Science,Nanjing University of Posts and Telecommunications,Nanjing 210023,China [2]School of Telecommunication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China

出　　处：《Chinese Physics B》2024年第9期223-237,共15页中国物理B（英文版）

基　　金：the National Nat-ural Science Foundation of China(Grant Nos.62071248 and 62201284);the Graduate Scientific Re-search and Innovation Program of Jiangsu Province(Grant No.KYCX241119).

摘　　要：Social networks are inevitably subject to disruptions from the physical world,such as sudden internet outages that sever local connections and impede information flow.While Gaussian white noise,commonly used to simulate stochastic disruptions,only fluctuates within a narrow range around its mean and fails to capture large-scale variations,L´evy noise can effectively compensate for this limitation.Therefore,a susceptible–infected–removed rumor propagation model with L´evy noise is constructed on homogeneous and heterogeneous networks,respectively.Then,the existence of a global positive solution and the asymptotic path-wise of the solution are derived on heterogeneous networks,and the sufficient conditions of rumor extinction and persistence are investigated.Subsequently,theoretical results are verified through numerical calculations and the sensitivity analysis related to the threshold is conducted on the model parameters.Through simulation experiments on Watts–Strogatz(WS)and Barab´asi–Albert networks,it is found that the addition of noise can inhibit the spread of rumors,resulting in a stochastic resonance phenomenon,and the optimal noise intensity is obtained on the WS network.The validity of the model is verified on three real datasets by particle swarm optimization algorithm.

关 键 词：rumor propagationmodel L´evy noise extinctionandpersistence STOCHASTICRESONANCE 

分 类 号：O157.5[理学—数学] TP18[理学—基础数学]