I am a 5th year Ph.D. student in the Department of Computer Science, University of California, Santa Barbara. I am currently working with Prof. Xifeng Yan. My research interest lies in a broad area of Data Management, with emphasis on managing and querying over large-scale heterogeneous graphs or unstructured data (see the figure below). I am also a member of the Information Network Academic Research Center (INARC). Before came to UCSB, I obtained B.E. and M.S. in Computer Science from Beijing University of Posts and Telecoms. Find more details about me in my CV.

I'm now a Research Scientist at Facebook.

Research Interests

  • Keyword and graph search on large-scale unstructured data (e.g., RDFs, Graphs, Text documents, etc).
  • Machine learning for ranking/relevance.
  • Distributed computation and data processing.


  • 05/15: Paper "Exploiting Relevance Feedback in Knowledge Graph Search" accepted in SIGKDD 2015
  • 04/15: PC member in CIKM 2015
  • 02/15: Paper "Fine-Grained Knowledge Sharing in Collaborative Environments" accepted in TKDE