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Visiting professor at MIT in Summer 2013 & Fall 2016.
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Visiting professor at Microsoft Research Machine Learning and Perception Group Cambridge, UK in Summer 2009 & Summer 2010.
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In Summer 2008, he worked at Microsoft Research Machine Learning and Perception Group Cambridge, UK as a research internship.
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In Summer 2007, he worked at IBM T.J. Watson Research Center System Analysis and Optimization Group, Yorktown, NY, USA as a research internship.
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In Summer 2006, he worked at Bell Labs Department of Mathematics of networks and systems, Murray Hill, NJ, USA as a research internship.
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Visiting researcher in Microsoft Research Theory group Redmond, WA, USA in winter 2003-2004.
- Research Areas include Natural language processing, Deep learning algorithms, and Data analysis and web services.
- Senior Technical Program Comittee of AAAI 2022.
- Associate Editor of Knowledge and Information Systems (KAIS) 2022.
- Technical Program Committee (Reviewer) of EMNLP 2021.
- Technical Program Committee (Reviewer) of ICML 2021.
- Technical Program Committee (Reviewer) of ACL 2021.
- Technical Program Committee of AAAI 2021.
- Technical Program Committee (Reviewer) of EMNLP 2020.
- Technical Program Committee (Reviewer) of ICML 2020.
- Technical Program Committee (Reviewer) of ACL 2020.
- Technical Program Committee of AAAI 2020.
- Technical Program Committee of IEEE ICDM 2019.
- Gave a Tutorial Talk "Deep Learning for the Web" at the WWW 2015.
- Organizer of the International Workshop on Open Big Data Foundation at IEEE ICDE 2015.
- Technical Program Committee of ACM SIGMETRICS 2015.
- Editor in Chief, Korea Information Processing Society Review 2014-2015.
- Program Committee Member of WWW 2014 Demo Track.
- Program Committee Member of WWW 2013 Demo Track.
- Program Committee Member of ACM KDD workshop, Mining Data Semantics in Information Networks, 2012.
- Organizer of the 2012 Summer School on Social Network Analysis, KAIST, Korea, Aug 2012.
- Organizer of the 2012 International Social Web Workshop, Ramada hotel Jeju, Korea, Aug 2012.
- Program Committee Member of 22nd Joint Conference on Communications and Information, 2012.
- Organizer of the 2011 Summer School on Social Network Analysis, Daejeon, Korea, Aug 2011.
- Program Committee Member of IEEE Globecom 2010.
- Program Committee Member of PSIVT 2010.
- Organizer of the Winter School on Algorithms, Jochiwon, Korea, Jan 2010.
International Conference Proceedings
International Journal Publications
Workshops