Nojun Kwak (Senior Member, IEEE) was born in Seoul, South Korea, in 1974. He received the B.S., M.S., and Ph.D. degrees in electrical engineering and computer science from Seoul National University, Seoul, in 1997, 1999, and 2003, respectively. From 2003 to 2006, he was with Samsung Electronics, Seoul. In 2006, he joined Seoul National University as a BK21 Assistant Professor. From 2007 to 2013, he was a Faculty Member with the Department of Electrical and Computer Engineering, Ajou University, Suwon, South Korea. Since 2013, he has been with the Graduate School of Convergence Science and Technology, Seoul National University, where he is currently a Professor. His current research interests include feature learning by deep neural networks and their applications in various areas of pattern recognition, computer vision, and image processing.