Journal of Information Resources Management ›› 2021, Vol. 11 ›› Issue (2): 52-59.doi: 10.13365/j.jirm.2021.02.052

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Research on the Theme Evolution of Public Health Emergencies Based on Zhihu

Zhao Rongying1,2,3 Chang Ruru1,3 Chen Zhan3 Wang Yuran3 Sun Zhumo3 You Shengyi3   

  1. 1.Research Center for Chinese Science Evaluation, Wuhan University; 
    2.Center for Studies of Information Resources at Wuhan University; 
    3.School of Information Management, Wuhan University, Wuhan 430072
  • Online:2021-03-26 Published:2021-05-20

Abstract: Since the beginning of 2020, a novel coronavirus pneumonia (COVID-19) has gradually broken out, causing widespread concern from all walks of life. Aiming at Zhihu, the largest topic discussion platform in China, this study uses LDA (Latent Dirichlet Allocation) model to analyze the content and intensity evolution of the online discussion topics and to explore the changes of public opinion topics and their concerns during the epidemic. This experiment has a positive reference value for the supervision of epidemic information, and also has a learning and reference significance for the response and handling of public health emergencies in the future.

Key words: COVID-19, Public health emergency, Thematic evolution, Zhihu, Online public opinion, LDA model

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