I am a Research Scientist and Tech Lead at Yahoo Labs, working on data mining and machine learning problems, with the applications particularly in the domain of personalization and recommendation. Prior to joining Yahoo Labs, I was a research assistant in Department of Computer Science and Engineering at Lehigh University, where I was a member of WUME lab from 2008 to 2013, under the supervision of Associate Professor Brian D. Davison. I obtained Ph.D. (2013), M.S. (2010) from Lehigh University and B.S. (2007) from Beijing University of Chemical Technology, all in Computer Science. My research interests include: * machine learning and data mining * personalization and recommender systems * information retrieval and text mining With the tools in the above areas, I focus on the applications in topic/interests modeling, recommendation/personalized information systems , collaborative filtering, user modeling/profiling and real-time event/trend detection. I have published papers in major international conferences in data mining, machine learning and information retrieval, such as SIGIR, WWW, KDD, CIKM, RecSys, AAAI, WSDM and ICML with more than 1,000 citations. I have been served as program committee members in SIGIR, WSDM, AAAI, EMNLP, ICWSM and several workshops. I have helped to review articles in journals such as Data Mining and Knowledge Discovery, ACM Transactions on Knowledge Discovery from Data, ACM Transactions on Intelligent Systems and Technology, ACM Transactions on Information Systems, Neurocomputing, IEEE Intelligent Systems, IEEE Transactions on Knowledge and Data Engineering, IEEE Transactions on Systems, Man, and Cybernetics, Journal of Computer Science and Technology, Journal of Systems Science and Systems Engineering and Information Systems. I have co-founded User Engagement Optimization Workshop, which has been held in conjunction with CIKM 2013 and KDD 2014.

Research Scientist and Tech Lead @ From February 2013 to Present (2 years 9 months) Sunnyvale, CAResearch Assistant @ From September 2010 to January 2013 (2 years 5 months) Bethlehem, PAData Science Intern @ From August 2011 to December 2011 (5 months) Mountain View, CAResearch Intern @ From May 2011 to August 2011 (4 months) Sunnyvale,CAResearch Intern @ From June 2010 to August 2010 (3 months) Sunnyvale,CAHigh Performance Computing Graduate Assistant @ From August 2008 to May 2010 (1 year 10 months) Bethlehem, PASoftware Engineer Intern @ From June 2008 to August 2008 (3 months) Nazareth, PATeaching Assistant @ From August 2007 to May 2008 (10 months) Bethlehem, PAPresident of Student Network Center @ From December 2004 to December 2005 (1 year 1 month) Director of the Technology Group of Student Network Center @ From March 2004 to December 2004 (10 months)

PhD @ Lehigh University From 2007 to 2013 Master of Science @ Lehigh University From 2007 to 2010 BS @ Beijing University of Chemical Technology From 2003 to 2007 Chengdu No.7 High School From 2000 to 2003