Her research interests are recommendation systems, information retrieval, applied machine learning, natural language processing, and computational economics. She has received various awards, including ACM SIGIR Best Paper Award, National Science Foundation Faculty Career Award, Air Force Young Investigator Award, Google Research Award, Microsoft Research Award, and IBM Research Fellowship. She has serve as program co-chair in charge of IR at CIKM and senior PC member for various conferences. She is an associate editor for ACM Transaction on Information Systems. She has served as a consultant or a technical adviser for several companies and start ups. She received her B.S. from Department of Computer Science & Technology at Tsinghua University in 1999 and her Ph.D. from School of Computer Science at Carnegie Mellon University in 2005.