His research interests include: web search, semantic search, data mining and machine learning. He has served as PC member of several past ISWC (International Semantic Web Conference) conferences and a dozen of other related conferences (e.g. WWW, SIGIR, RecSys, etc) in these field.
As the principal investigator, he took charge of several NSFC (National Natural Science Foundation of China) and China National High Tech “863” Program projects. He has also established long-term collaborations with IBM China research lab, Microsoft research Asia, Google China and Intel China developing center to carry out several joint projects the above mentioned research directions.