在线社交网络中考虑认同——怀疑机制的谣言传播模型  

Model of Rumor Propagation in Online Social Networks Considering the Identity-Skepticism Mechanism

作　　者：贾婧冰 王友国[1,2] 颜俊[2] 孙先莉 JIA Jingbing;WANG Youguo;YAN Jun;SUN Xianli(School of Science,Nanjing University of Posts and Telecommunications;School of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]南京邮电大学理学院 [2]南京邮电大学通信与信息工程学院,江苏南京210023

出　　处：《软件导刊》2024年第10期120-128,共9页Software Guide

基　　金：国家自然科学基金项目(62071248)。

摘　　要：在线社交网络中,谣言传播受到多种因素的影响。考虑到网民对谣言有认同和怀疑态度,部分人相信谣言并传播,另一部分人不相信谣言并免疫,还有一部分人会保持未知或中立等状态。基于传统的SIR谣言传播模型,引入未知者认同—怀疑机制,考虑认同—怀疑概率与谣言转发次数和相关系数相关,谣言传播者的遗忘率与信息时效性相关,建立修正的SIR模型。首先,推导了均匀网络和非均匀网络中修正的SIR谣言传播模型的平均场方程;其次,利用蒙特卡罗方法对谣言传播过程进行了仿真。仿真结果显示,信息时效性降低、遗忘率和质疑谣言的概率增加,会导致传播者峰值密度降低和谣言传播规模减小;谣言被转发次数越多,以及谣言与人们的相关性越高,传播范围越广,传播节点的峰值密度越大。Rumor spreading in online social networks is influenced by a variety of factors.Considering that netizens have agreeable and skeptical attitudes towards rumors,some of them believe the rumors and spread them,another part does not believe the rumors and is immune to them,and another part will keep the state of unknown or neutral and so on.Based on the traditional SIR rumor propagation model,the unknowns′identity-skepticism mechanism is introduced,the identity-skepticism probability is considered to be related to the number of rumor retweets and the correlation coefficient,and the rumor spreader′s forgetting rate is related to the timeliness of the information,and the modified SIR model is established,and the mean-field equations of the modified SIR rumor propagation model are firstly derived for the uniform network and the inhomogeneous network,and then the Monte Carlo method is used to simulate the rumor The rumor propagation process was simulated using the Monte Carlo method.The simulation results show that the decrease of information timeliness,the increase of forgetting rate and the probability of questioning the rumor will lead to the decrease of the peak density of spreaders and the scale of rumor spreading;the more times the rumor is forwarded,as well as the higher the relevance of the rumor to the people,and the wider the scope of spreading,the higher the peak density of spreading nodes.

关 键 词：在线社交网络 谣言传播 认同—质疑机制 信息时效性 蒙特卡罗模拟 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]