this paper discusses the development process of Internet public opinion group polarimetric and time relationships, analyzes Internet developments in the process of formation, development and regression in three phases and can predict the trend of public opinion and then by ARMA model for simulation and analysis.Contact group-oriented evolution of the polarization of public opinion factors and group polarization characteristics of the Internet and the pros and cons of Internet fast.features Internet features advantages and disadvantages.
Internet public opinionGroup polarizationARMadvantages and disadvantages