Research On The Law Of Network Public Opinion Propagation And Intervention In Major Public Health Emergencies

The spread of network public opinion caused by major public health emergencies is large,and it is easy to derive negative public opinion that has a serious impact on society,thus deteriorating the development of network public opinion and increasing the difficulty of management and response of regulatory authorities.Mastering the propagation law and characteristics of network public opinion in major public health emergencies can provide theoretical reference for regulatory authorities to deal with network public opinion in major public health emergencies.By timely intervening the key nodes of network public opinion propagation and formulating reasonable intervention strategy set,it provides a theoretical basis for guiding the evolution of network public opinion and targeted prevention and control.Therefore,this paper takes revealing the propagation law and establishing the propagation law model of network public opinion in major public health emergencies as the starting point,and timely intervention and control of public opinion as the foothold,and conducts a series of studies on the propagation law and intervention of network public opinion in major public health emergencies.In this paper,the propagation law model is constructed to reveal the propagation law of network public opinion in major public health emergencies.Gephi visualization is used to identify the key nodes of propagation.According to the six-stage propagation law,the intervention strategy set is proposed to construct the theoretical model of network public opinion intervention in major public health emergencies.Based on the SEIR model,the propagation law model of network public opinion in major public health emergencies is constructed through the propagation influence factors in the NetLogo simulation analysis model.Based on the life cycle theory,this paper reveals the network public opinion propagation law of major public health emergencies.The key propagation channels of network public opinion monitoring and early warning for major public health emergencies are analyzed.The key nodes of propagation are identified by Gephi visualization.The hot topics and high-frequency keywords are monitored by big data technology.The early warning basis and means of network public opinion for major public health emergencies are refined,the early warning level is established,and the network public opinion monitoring and early warning mechanism for major public health emergencies is established.Based on the study of propagation law,monitoring and early warning,this paper puts forward the intervention strategy set of supervision departments for network public opinion of major public health emergencies,and constructs the theoretical model of network public opinion intervention of major public health emergencies.Taking the epidemic of new coronavirus pneumonia in Xi’an at the end of 2021 as an example,this paper verifies the scientific nature of the network public opinion dissemination law and intervention model of major public health emergencies,and puts forward corresponding intervention methods and guidance suggestions.Research shows that the current major public health emergencies network public opinion propagation law conforms to the latent,fermentation,outbreak,mitigation,repeated,recession six stages.The "total number of communication involved","initial number of communication" and "communication cycle" have a significant impact on the process of network public opinion dissemination in major public health emergencies.When the total number of communication involved is 1000,the initial number of communicators is 10 and the communication cycle is 5 days,it is the best time to intervene in the development of public opinion.Monitoring and early warning of network public opinion in major public health emergencies can be carried out from three aspects:"hot topic monitoring",“high frequency keyword monitoring" and“identifying key nodes of propagation".It is concluded that through the monitoring and early warning of the propagation process and key nodes of network public opinion in each stage,the propagation law of network public opinion in major public health emergencies is mastered,so as to realize the effective intervention of network public opinion in major public health emergencies.This study provides a new idea for the regulatory authorities to deal with the network public opinion of major public health emergencies,which has important practical reference significance and theoretical value.