I am a Research Scientist and Tech Lead at Yahoo Labs, My research interests include: 1) machine learning and data mining, 2) personalization and recommender systems and 3) information retrieval and text mining. Leading a small group of scientists and engineers, we utilize state-of-the-art data mining and machine learning techniques to deliver cutting edge solutions to problems like large-scale content recommendation, user modeling and contextual mobile search, for instance: 1) a large scale ranking systems for Yahoo homepage content items in US and International markets, 2) a next generation mobile search applications with statistical modeling and user modeling, 3) a statistical models to track and predict click-through-rate (CTR) of native streaming ads and 4) a large scale content understanding tools to model user’s interests and the evolution of topics.
Over the past several years, I have published papers in all major international conferences in data mining, machine learning and information retrieval, such as SIGIR, WWW, KDD, CIKM,AAAI, WSDM, RecSys and ICML with more than 1,200 citations (H-index: 16), with WWW 2011 Best Poster Paper Award, WSDM 2013 Best Paper Nominated and RecSys 2014 Best Paper Award. I have served as program committee members in WWW, SIGIR, WSDM, AAAI, EMNLP, ICWSM, ACL, CIKM, IJCAI and several workshops. In addition, I have helped to review articles in most prestige 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, Information Processing and Management, Journal of Computer Science and Technology, Journal of Systems Science and Systems Engineering andInformation Systems. I have co-founded User Engagement Optimization Workshop, which has been held in conjunction with CIKM 2013 and with KDD 2014.
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