Young-Koo Lee received his B.S., M.S., and Ph.D. degrees in Computer Science from the Korea Advanced Institute of Science and Technology (KAIST), South Korea, in 1988, 1994, and 2002, respectively. From 2002 to 2004, he was a Postdoctoral Fellow with the Advanced Information Technology Research Center, KAIST, South Korea, and a Postdoctoral Research Associate with the Department of Computer Science, University of Illinois at Urbana Champaign, USA. Since 2004, he has been a Professor at the Department of Computer Engineering, College of Electronics and Information, Kyung Hee University, South Korea. His research interests include ubiquitous data management, data mining, activity recognition, bioinformatics, online analytical processing, data warehousing, database systems, spatial databases, and access methods.