Research on the construction of quantitative index of microblog group polarization in university public opinion events

“We Media” have enabled netizens to express their opinions in a freer and more convenient way. Netizens’ speech tends be deviated after group discussion, resulting online public opinion polarization irrational behaviours. Here, quantitative index of Microblog has been established based on the sentiment analysis comment text, popularity comments interaction users' @. Besides, effectiveness such verified by simulation experiment, aiming provide decision-making thinking method guidance for determination.