Co-chair, International Workshop on Large Scale Graph Representation Learning and Applications (GRLA), in conjunction with IEEE ICDM 2018.
Program Committee, The Annual Meeting of the Association for Computational Linguistics (ACL), 2018.
Program Committee, International Conference on Information and Knowledge Management (CIKM), 2017.
Program Committee, International Conference on Data Engineering (ICDE), 2017.
Program Committee, International World Wide Web Conference (WWW), 2014, 2017, 2018.
Program Committee, The IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM), 2015, 2016, 2017, 2018.
Program Committee, International Joint Conference on Artificial Intelligence (IJCAI), 2016, 2018.
Program Committee, AAAI Conference on Artificial Intelligence (AAAI), 2010, 2017, 2018.
Program Committee, ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), 2015, 2016, 2017, 2018.
Program Committee, ACM International Conference on Web Search and Data Mining (WSDM), 2014, 2015, 2016.
Program Committee, The Asia-Pacific Web Conference (APWeb), 2015, 2016.
Program Committee, CCF Conference on Natural Language Processing and Chinese Computing (NLPCC), 2017.
Program Committee, International Workshop on Context Discovery and Data Mining (ContextDD), 2014.
Program Committee, International AAAI Conference on Weblogs and Social Media (ICWSM), 2014, 2017.
Program Committee, IEEE International Conference on Big Data (IEEE BigData), 2013, 2014, 2015, 2016.
Program Committee, International Workshop on Big Data Mining and Understanding (BigMUD 2013), co-located with IEEE ICDM 2013.
Co-chair, International Workshop on Localization Technology and Location-based Services (LTLS), co-located with IEEE iThings/CPSCom/GreenCom 2013 conference.
Program Committee, International Symposium on Social and Community Intelligence (SCI), co-located with ACM Ubicomp 2011.
Co-organizer, the 1st IEEE ICDM Data Mining (ICDM) Contest, 2007.