Research on the evolutionary analysis model of public opinion in public security emergencies
In order to accurately analyze the public opinion information of public security emergencies,this paper proposes a public opinion evolution analysis model.Firstly,the life cycle theory is used to divide the event into multiple development stages.Secondly,the LDA model is used to extract the theme of public concern at each stage.Finally,SnowNLP is used to analyze the emotional tendencies of text data at different stages.Taking the comment text of real events as the experimental data and mining the public's focus and emotional attitude illustrate the application process and feasibility of the model,and provide help for rele-vant departments to effectively obtain and timely handle public opinion information.
LDAnetwork public opinionmulti-source datasentiment analysispublic opinion analysis
NETL
NSTL
万方数据
