Jonathan J. H. Zhu (Ph.D. in Communication, Indiana University) is a Professor and Founder of Web Mining Lab in Department of Media and Communication at City University of Hong Kong. He was previously an Associate Professor of Communication Sciences at University of Connecticut, Storrs, U.S.A. He used survey, content analysis, and experiment to study traditional media in his earlier research but has become increasingly engaged with computational approaches to social media data. His works have been published across a variety of disciplines including social sciences, computer science, mathematics, engineering, and bioinformatics. His Erdos number is 3.