He was a postdoctoral researcher at University of California, Davis, and Seoul National University (SNU). He received his B.S. degree in computer science from KAIST in 2007 and Ph.D. degree in computer science and engineering from SNU in 2013. He has published over 30 papers in major conferences and journals including ACM SIGMETRICS, IEEE INFOCOM, World Wide Web (WWW), ACM COSN, ICWSM, IEEE ICDCS and ACM TWEB. He has been served as Technical Program Committees members in the top conferences including IEEE INFOCOM and WWW conferences. His research interests include data science, network science, social computing, communications, business analytics, and future Internet.