Prior joining KAIST in the summer 2016, he spent two years as a research staff member at IBM T.J. Watson Research Center. He obtained his Ph.D. in 2014 from the university of Texas at Austin, and did M.S. and B.S from the Seoul National University, Korea in 2006 and 2004, respectively. From 2006 to 2009, he was a researcher at the Korea Telecom as the alternative military service in Korea. His research interests are in statistical machine learning in general with the special focuses on high-dimensional statistics.