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The Landscape of Information Diffusion on Sina Weibo: Investigating the Rich-Club Effect

Sun, May 24, 12:00 to 13:15, Caribe Hilton, Grand Salon Los Rosales

Abstract

Rich-club is a closely connected sub-community in networks. To test its influence on the information flow, we study competing mechanisms of the information flow on the biggest microblog in China—Sina Weibo. The results demonstrate that: first, there is relatively strong rich-club effect in both influential users and random sampled users; second, social selection, geographic proximity, and social influence have significant influence on the information flow within the rich-club for different social groups, and the impact of social influence is overwhelmingly strong. The theoretical generalizations help us understand the hierarchical rich-club effect in information diffusion.

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