From February 1997 to August 1998, he was a visiting scholar at the University of Illinois at Urbana-Champaign. He served as the Dean of College of Computer Science, Zhejiang University from 2009 to 2017, the director of Institute of Artificial Intelligence from 2006 to 2015. Currently, he is a full professor at the College of Computer Science, Director of MOE-Digital Library Engineering Research Center, Zhejiang University.
    His research interests mainly include multimedia retrieval, artificial intelligence, cross-media computing, digital library. He has won various awards and honors such as National Science Fund for Distinguished Young Scholars of China from National Natural Science Foundation(2005), the “Chang Jiang Scholars Program” Professor of the Ministry of Education of China(2008), the chief scientist of 973 Project(2012CB316400). He was the leading PI of the digital library project— “China America Digital Academic Library(CADAL)”, which has now become one of the largest non-profit digital libraries in the world. Also he is the director of the technical center of UNESCO Category II International Knowledge Center of Engineering Science and technology(IKCEST).