Yifang received a PhD in Mathematics from the School of Mathematical Sciences, Peking University. His doctoral research focused on dynamical systems and complex networks. He is now a post-doc at Kellogg School of Management and NICO, working with Prof. Brian Uzzi. Yifang's research is focused on understanding the collective behaviors of individuals from massive data. He is also interested in citation networks, social and economic networks, human mobility, and data visualization.