题目:Research Progress on Rumor Propagation in Online Social Networks
报告人:赵洪涌教授 (南京航空航天大学)
时间:5月14日(星期六),上午 9:00-10:00
地点:致远楼102室
赵洪涌,四川大学理学博士,南京大学博士后。现为南京航空航天大学教授,博士生导师,九三学社社员。长期从事时滞微分方程、网络传播动力学与控制、人工神经网络动力学、优化与图像处理、生物系统动力学与控制等研究。2006年被合肥学院聘为客座教授。合肥学院网络与智能信息处理实验室学术委员会副主任。2006年,被遴选为江苏省高校“青蓝工程”优秀青年骨干教师; 2012年,被遴选为江苏省高校"青蓝工程"中青年学术带头人。已在国内外发表学术论文九十余篇,其中SCI刊物上发表论文五十六篇,被SCI刊物引用近二千次。2014年和2015年连续两年入选爱思唯尔中国高被引学者榜单。获省自然科学优秀论文二等奖一项、南京市自然科学优秀论文奖一项。主编教材一部,并获“十一五”规划计算机类优秀教材评比特等奖(2010年)。主持国家自然科学基金二项,参与一项;主持省级基金二项。国家自然科学基金通讯评议专家;教育部学位与研究生教育发展中心博士学位论文和优秀学位论文特邀评议专家;曾担任多个国际会议程序委员会委员和国际SCI杂志编委。现为中国自动化学会会员,TCCT随机系统控制委员会委员。
报告摘要
Online social network as a new platform for information diffusion and establishing social relations has gradually become a hot topic of researches. However, due to the less constraint for virtual crowds in online social networks, it has greatly weakened the certainty and the reliability of all kinds of network information. In view of this, through establishing an appropriate mathematical model to analyze, forecast and control rumor propagation is particularly important. This report comprehensively considers the effects of time delay, spatial diffusion, the government, media and network topology on rumor propagation and established several delayed reaction-diffusion network rumor propagation models. By the theory of partial functional differential equations, the sensitivity analysis method and the control theory, we discuss the travelling wave solution, stability, bifurcation, periodic solution and patters of the models, and reveal the general rule of rumor propagation both in time and space. Our results can provide an important guidance for the government to control rumor spreading.
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