Research on Visualization of Emergency Response To COVID-19 : ——Social Network Analysis Based on Microblog Data

This paper is based on theories related to social network analysis, with Sina WeChat "emergency management" information dissemination as the research object, and web spider, Chinese word segmentation, Gephi and other social network analysis tools to carry out empirical study of emergency management structures, network centres and media at various phases during COVID-19. Also, in this paper, upon the empirical analysis of "emergency management" information dissemination, it has been found that the structure of the emergency management network gradually intensified during COVID-19.