Influence of Active Search on Information Propagation on the Chinese Sina Microblog

Active search has become a major way for Internet users to obtain information. To better understand information dissemination, we propose an active search-based susceptible forwarding immune(A-SFI) propagation dynamic model. The model takes into the possibility of people actively searching for contact information on the basis SFI model. We numerically fit the model based on the data collected by Sina Microblog to verify its effectiveness. And our sensitivity analysis of the A-SFI model describes the importance of active search factors to information propagation. At the same time, we use the A-SFI model to predict with two methods respectively, The results show that the A-SFI model can predict the future development of information dissemination earlier and better than the SFI model. Finally, we conclude that the active search factor can not be ignored in the process of information dissemination, which is beneficial to put forward better strategies to guide public opinion.