His research is focused on developing algorithms and systems for extracting value from dirty data. Prior to that, he was a postdoc in the AMPLab at UC Berkeley. He obtained his PhD from the Computer Science Department at Tsinghua University. During his PhD, he has been a visiting scholar at Chinese University of Hong Kong and UC Berkeley, and an intern at Qatar Computing Research Institute. His PhD research work was supported from a Google PhD Fellowship, a Boeing Scholarship, and a New PhD Researcher Award by Chinese Ministry of Education. His PhD dissertation won the China Computer Federation (CCF) Distinguished Dissertation Award. His similarity-join algorithm won first place of EDBT String Similarity Search/Join Competition.