Lexing Xie is a Research Staff Member at IBM T. J. Watson Research Center in Hawthorne, NY. She received MS and PhD in Electrical Engineering from Columbia University in 2002 and 2005, and B.S. in EE from Tsinghua University, Beijing, China in 2000. Her research interest has been on multimedia signal processing, content analysis, data mining and machine learning. She has specifically worked on mining events and temporal patterns in multimedia, recognition and search on large media collections, and social media annotation. Dr. Xie has authored or co-authored more than twenty international conference and journal papers, and holds two U.S. patents. Her research has received several best student paper awards: 2007 ACM/IEEE Joint Conference on Digital Library (JCDL) on image annotation in social networks, IEEE International Conference on Image Processing (ICIP) in 2004 on discovering meaningful temporal patterns from video; ACM Multimedia 2005 on geometric features for distinguishing photo from computer graphics; ACM Multimedia 2002 on generating coherent audio-visual skims. She was the sole winner of 2005 IBM Research Josef Raviv Memorial Postdoc fellowship in computer science and engineering. She serves on various conference organizing and program committees including ACM CIVR 2006 and 2008 and IEEE ICME 2006-08, PCM 2007. she is also guest editor of IEEE Transactions of Multimedia on Communities and Media Computing.