Areas of Interest:

Mobile, IoT and wearable Computing, Social and Culture Computing, Ubiquitous Services, Computer Systems, Distributed Systems, Internet News and Multimedia Systems and Services

Education:

• Ph.D in Computer Science, University of Maryland, College Park, Maryland, Dec. 1997
• B.S. in Computer Science, Seoul National University, Seoul, Korea, February 1988

Employment History

• Professor, Department of Computer Science, KAIST, Daejeon, Korea from Sep. 2011
• Associate Professor, Department of Computer Science, KAIST, Daejeon, Korea from September 2003 to August, 2011
• Assistant Professor, Department of Electrical Engineering and Computer Science, KAIST, Daejeon, Korea from August 2000 to August 2003
• Research Staff Member, Parallel Commercial Systems Department, IBM T. J. Watson Research Center, Hawthorne, New York, from Oct. 1997 to July 2000
• Software Engineer, Digital Media Solutions Department, IBM T. J. Watson Research Center, Hawthorne, New York, from June 1996 to August 1997.
• Research Intern, Digital Library Group, IBM T. J. Watson Research Center, Hawthorne, New York, from June 1995 to June 1996.
• Graduate Research Assistant, Department of Computer Science, University of Maryland, College Park, M.D. from February 1995 to May 1995.
• Research Intern, Digital Library Group, IBM T. J. Watson Research Center, Hawthorne, New York, from June 1994 to February 1995.
• Graduate Teaching Assistant, Department of Computer Science, University of Maryland, College Park, M.D, from January 1992 to May 1994.
• Research Associate, Institute for Pattern Recognition, Stony Brook, New York, from January 1989 to December 1989.

Professional Activities

• Program Co-chair, ACM MobiSys 2022
• Program Chair, ACM HotMobile 2021
• Associate Editor in chief, IEEE Pervasive Computing 2020
• General Co-chair, ACM MobiSys 2019
• Guest Editor, Special Issue on Conversational User Interfaces and Interactions, IEEE Pervasive Computing 2019
• Associate Editor, ACM IWMUT 2017~
• General Co-chair, IEEE MDM 2017
• Associate Editor, IEEE Pervasive Computing 2016~2019
• Steering Committee Member, ACM SenSys 2015~2019
• General Chair, ACM SenSys 2015
• Steering Committee Member, ACM UbiComp 2014~2018
• Program Co-chair, ACM UbiComp 2014
• Associate Editor, IEEE TMC 2013~2019
• Member of National Academy of Engineering of Korea (2017~)
• Member of Korea Academy of Science and Technology (2015~)

Honors and Awards

• Best Presentation Award Nomination, ACM Ubicomp 2020
• Best Demo Award, ACM MobiSys 2019
• Best Video Award, ACM MobiSys 2017
• KAIST Academic Excellence Award, 2015
• Honorable Mention Award, ACM CHI 2014
• Best Paper Award, ACM CSCW 2014
• Honorable Mention Award, MobileHCI 2014
• Best Demo Award, ACM HotMobile 2013
• Best Demo Award, ACM MObiSys 2012
• Best Demo Award, IEEE SECON 2012
• KAIST-designated Chair Professor (2011~2014)
• Best Paper Award Nomination and Honorable Mention, ACM CSCW (International Conference on Computer Supported Cooperative Work), March 2011
• KAIST Award of Intellect of New Frontier (2011)
• KAIST Technology Innovation Award (2009)
• Best Paper Award, the 7^th International Conference on Mobile Data Management (2006)
• Best Paper Award, Annual International Conference on Computer and Information Science (2002)
• IBM Second Plateau Invention Achievement Award (1998)
• IBM First Plateau Invention Achievement Award (1997)
• IBM Graduate Student Fellowship, from 1995 to 1997
• Three Bronze Prizes, SAMSUNG 11th Human Tech Thesis Prize (2005)
• Honorable mention, SAMSUNG 12th Human Tech Thesis Prize (2006)