Study On Network Public Opinion Resonance Based On Stochastic Resonance Model

As with the rapid development of information technology,public opinion issues in Internet environment are widely studied and scholars obtained abundant research results,including definition of network public opinion,causes,features,evolution,public opinion warning,forecasting and so on.As far as the present research results,scholars usually regard the public opinion as the development of single event on single track.However,there are less researches concerning about the relationship between successor derivative public opinion affected by different factors from the naive public opinion and many public opinions.If netizen's sentiments are affected by many events with similar subjects involved,sentiments or topics,their sentiments will affect each other.When the same or similar sentiments accumulate,public opinion resonance happens.From the events that occur in real life,compared with single public opinion,public opinion resonance may have more damage and stronger destructive power on society,which leads to synergism.Thus,reinforcing the research on internet resonant phenomena is important to suervision of society sentiment expression and public opinion.Although scholars have started qualitative researches on public opinion resonance,research on public opinion resonance from micro-level analysis is still just a few.This paper focuses on the resonant phenomena caused by the relationship between the primary events and the secondary events of public opinion,concerning about the influence of factors such as regional culture,population characteristics,government and internet media intervention on public opinion resonance.Public opinion resonance is similar to physics resonance.All kinds of informational molecules of network public opinion are in constant random motion and are randomly struck by public opinion event(like pollen particle),thus,topics of public opinion event randomly "walk" to all directions.Stochastic resonance theory is theory that based on differential equation when Langevin studied Brownian movement."Start-rising-climax-recession" is the common development trend of network public opinion,which is similar to two potential wells and one potential barrier of bistable state system described by stochastic resonance theory.Based on the stochastic resonance theory in physics,this paper constructs public opinion resonance function,analyses influence of trigger factors on public opinion resonance and explores public opinion resonance law relying on simulation experiments.According to the results of simulation experiments,public opinion resonance in different districts with different topics have different results and opinion leaders,law enforcement agencies,parties and the media's attitude affect the resonance as well as resonance amplitude.On the basis of the theoretical research,this paper collected the actual data of the hepatitis B vaccine event in 2013 and the Shandong vaccine event in 2016 from Sina Weibo,processed and calculated the data,analyzed the cases in order to observe whether the resonant effect of public opinion in the actual evolution process is consistent with the simulation results in this paper and thus verified the rationality and practicability of the network public opinion resonance model constructed in this paper.Results show that the network public opinion resonance model constructed in this paper can basically describe the law of network public opinion resonance phenomenon in the real society.