Abstract: Based on the Micro-blogging analysis, from a regional perspective, we researched micro-process of informa- lion diffusion. I3y measuring the real behavior of the user's information sharing,we constructed the network model of information listen and information forward. We found that a small group of nodes can cover the most of the communica- lion behavior of the information diffusion. I}hen, we proposed a recognition algorithm named WciboRank like Hits to find them, and proposed a evaluation based on real measurement coverage. It is verified that compared with the other al- gorithms, the proposed algorithm is effective.

Key words: Micro-blogging, Social networking, Information diffusion,Diffusion of influence