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Research on Evolution and Control of Network Public Opinion Based on SEIR Model with Martial Law Mechanism

The spread of public opinions on the Internet for emergencies can easily cause public crisis, which requires the active governance of government departments. Based on the SEIR infectious disease dynamics model, the prediction and evaluation of the evolution and prevention of public opinion in public emergencies were conducted, and the evolution process model of public opinion considering the isolation mechanism was established. The results show that the SEIR infectious disease dynamics model is reliable in the analysis of online public opinion communication situation, and can provide certain theoretical support for the evolution and prevention of online public opinion.