Research on Network Public Opinion Warning Mechanism for Sudden Typhoon Events
[Research purpose]With the continuous development of the network society,the network public opinion crisis is emerging,and the public opinion early warning mechanism plays an increasingly significant role in responding to emergencies.Research on the net-work public opinion early warning mechanism of sudden typhoon events can win the time for the government to prevent and reduce the public opinion crisis.[Research method]On the basis of theoretical analysis and literature survey,this study establishes a public opinion early warning indicator system,uses the combination weighting method to compute the weight of the indicators,and then uses the whiten-ing weight function and SAGAFCM algorithm to classify them.[Research conclusion]There is a nonlinear relationships between the real-time value of the Ⅰ-Ⅳ level risk indicators,the real-time value of the Ⅰ'-Ⅳ'level risk indicators,and the probability of public opinion crisis early warning,and the latter has a greater impact on its probability;At the same time,the interaction between the real-time values of the risk indicators of Level Ⅰ',Level Ⅱ'and Level Ⅲ'produces the warning critical surface,which provides a reference for the govern-ment departments to take corresponding measures.
network public opinionpublic opinion warningemergenciespublic opinion early warning indicatorsPetri netscluster a-nalysisMarkov chain