Abstract:

Because abnormal emergency owns the characteristics of explosive, uncertain evolution and group diffusion, more and more researchers concentrate on and try to solve it Especially, as the carrier and platform of information transmission of abnormal emergency, Internet makes public opinion on Internet attract more attention It is a new viewpoint to use the index system method to estimate heat degree of public opinion on Internet for abnormal emergency in order to find the underlying reasons of the fluctuation Besides, index system also provides strong evidence for stage division and control of public opinion on Internet from looking through interactive factors on the subjects and searching for developing law to control its diffusion

Key words: abnormal emergency; , public opinion on Internet; , index system