Evolutionary Model Of Microblog Network Public Opinion Communication Under Group Pressure

In recent years,Weibo has become an important carrier for the dissemination of online public opinion in China.The security and stability of Weibo’s network affect the security of the country and the stable development of society.The research on the dissemination of online public opinion can provide effective guidance for the development of online public opinion.The research in multiple disciplines such as sociology,psychology,physics,and cybernetics has achieved fruitful results,driving research in the field of online public opinion dissemination.With the increasing complexity of social life scenarios,it is particularly important to establish a models that are more in line with the dissemination of online public opinion.Base on the characteristics of individual heterogeneity in the interaction process of group opinions,the paper construct a more universal opinion updating rules by introduce the concepts such as group pressure,time delay,expression threshold and individual classification.We have established an evolutionary model for the dissemination of public opinion on Weibo networks under the influence of group pressure.Through the relevant simulation experiment,explore the effect of each influencing factor in the model on the evolution process of opinion.The simulation results show that the network structure has a great influence on the time spent on the convergence of group opinions.When selecting a network structure,it is necessary to choose an appropriate network structure based on the characteristics of the research object.The trust threshold determines the consensus situation when the opinion is stable,and the smaller the trust threshold,the more opinion clusters there are.Appropriate group pressure can shorten the convergence time of opinions,but the relationship between group pressure and convergence time is not inverse.As the proportion of non conformist groups continues to increase,the number of opinion clusters gradually increases.To some extent,the number of opinion clusters is dominated by non conformist groups.From the perspective of the number of final opinion clusters,the proportion of true conformity groups has a similar impact on the private and expressed opinions of the group.From the perspective of opinion convergence,group private opinions generally take more time than group expression.When the proportion of non conformist groups is fixed,the larger the proportion of true conformist groups,the easier it is for the group to reach consensus.The rights conformist group helps to form different opinions and promote diversity of viewpoints.The expression threshold will limit the time for individuals to express themselves,making it easier for groups to express their opinions.This phenomenon is consistent with the theory of "convergence psychology" in social psychology.Time delay can accelerate the convergence of opinions.This characteristic goes against intuition,that introducing time delay will accelerate opinion sharing,thereby further shortening the time required to achieve opinion stability.In the study of the evolution process of Weibo hot events,it was found that time delay can make simulation results closer to the evolution process of Weibo discussion trends.Therefore,time delay factors have practical research significance for Weibo network public opinion dissemination.Finally,this article verifies the simulation effectiveness of the Hegselmann Kraus model,Friedkin Johnsen model,Expressed Private Opinion model,and Weibo network public opinion dissemination evolution model under group pressure through model simulation experiments.The simulation results of the four models are compared with the discussion trend of "We Chat public platform is about to display user IP territories" to verify the effectiveness of the new model in this article,Prove that the evolution model of Weibo network public opinion dissemination under group pressure has practical value for simulating Weibo network public opinion dissemination.