A Study On Public Opinion Communication In The Media Are Based On Social Network Analysis

The rapid popularization of Internet has provided an indispensable medium for social development.The internet has became the main site where the public participate in social life.The scale of netizens,especially cellphone netizens is increasing by an exponential order.The Internet is becoming the information paltform that everyone owns and the channel where each people could express individual thoughts.With the arrival of “we media”era,every netizen could be a journalist.Everyone has a microphone and could be a news disseminator.The social media's booming has led microblog into public view.An increasing number of people pay attention to social hot affairs through microblog.The character of microblog,convenience and efficiency and instant dissemination,has promoted the further development of Internet public opinion.The microblog's public opinions has exploded great power.However,in the mean time,the openness and virtuality of Internet and mobile social media has decided that Internet public opinions have features such as disguised,burstiness,and discrepancy.Therefore this articla sets about from relevant theorizes of Information Science,with the help of LDA model.It also studies the evolvement rules of public opinions in “we media”era,so it has huge realistic significance in maintaining social stability and controlling internet public opinions effectively.This article studies the dessemination of public opinions by focusing on the most representative social media---sina microblog,and also explores and analyses the rules of public opinion'dissemination based on the Information science.I will choose the hot issue “Zhangjiakou Grass Skyline's toll”to analyze.Firstly,I will do the text excavation on this topic with LDA model to extract keywords.After that I will ues the Tagxedo---online wordle imagery tool to visualise the result of text excavation.Secondly,I will choose the top fifity users who reposted and commented the micriblog which was posted at nine fifty on May 8th in 2016 by the sina blueV identification user “The Beijing News” to build the social network.This article will recognize the key users and bridge users in social network by the means of measuring network dendity,degree centrality,between centrality,closeness centrality and cohesive subgroups etc,and it also will recognize the positive effection or negative effection in public opinions' affairs dissemination caused by the users.Thirdly,through analysis and comparison we can find out the common characteristic between two visual results,namely that in the whole dissemination process from formative period,outbreak period,catabasis to calm period,the public opinions dissenination start from individual opinion,and push forward under the influence of opinion leders,then finally calm down within authoritative opinion's permeation.Above all,I will summarize all the work in this article,and draw a conclusion that pulic opinions dissemination follow the periodic rule of development and the impact of participants especially opinion leader cannot be ignored.This article will hve vistas for the study of public opinions dissemination in future,which based on research conclusions.