Journal Editorship

• Associate Editor, Proceedings of the VLDB Endowment (PVLDB) (2017-2018; 2023-2024; 2025-26)
• Associate Editor, IEEE Transactions on Parallel and Distributed Systems (TPDS) (2023- )
• Associate Editor, IEEE Transactions on Big Data (TBD) (2023- )
• Associate Editor, Data Science and Engineering (DSE) (2022- )
• Associate Editor, IEEE Transactions on Knowledge and Data Engineering (TKDE) (2014-2020)
• Associate Editor, International Journal of Information Science and Engineering (JISE) (2016-2021)
• Editor, International Journal of Distributed Sensor Networks (IJDSN), Hindawi (2010-2014)
• Guest Editor, World Wide Web Journal (WWWJ), Springer, 2020
• Guest Editor, Distributed and Parallel Databases (DAPD), Springer, 2020
• Guest Editor, Data Science and Engineering (DSE), Springer, 2019
• Guest Editor, Future Generation Computer Systems, Elsevier, 2009

Professional Organizations

• Senior Member of IEEE (since 12/2007)
• EXCO Member and Vice Chairman of ACM Hong Kong Chapter (2008-10)

TPC Chair / Vice Chair

• TPC Co-Chair, PDCAT 2024, Hong Kong, December 2024
• TPC Co-Chair, IEEE BlockDM 2021, Crete, Greece, April 2021
• TPC Co-Chair, NDBC 2020, Wuhan, China, October 2020
• TPC Co-Chair, BChain 2020, Qingdao, China, October 2020
• TPC Co-Chair, IEEE BlockDM 2020, Dallas, USA, April 2020
• TPC Co-Chair, IEEE MDM 2019, Hong Kong, June 2019
• TPC Co-Chair, IEEE BlockDM 2019, Macau, April 2019
• TPC Co-Chair, APWeb-WAIM 2018, Macau, China, July 2018
• TPC Co-Chair, WAIM 2016, Nanchang, China, June 2016
• TPC Co-Chair, IEEE CPSNA '15, Hong Kong, August 2015
• TPC Track Chair, SMP '14, Beijing, China, November 2014
• TPC Co-Chair, HardBD '14, Macau, China, June 2014
• TPC Co-Chair, BigMSN '13, Fuzhou, China, December 2013
• TPC Vice-Chair (Distributed Data Management Track), ICDCS 2012, Macau, June 2012
• TPC Vice-Chair (Mobile and Ubiquitous Computing Track), ICPADS 2012, Singapore, December 2012
• TPC Co-Chair, FlashDB '12, Busan, South Korea, April 2012
• TPC Co-Chair, CloudDB '10, Toronto, Canada, Oct 2010
• TPC Co-Chair, P2PIM '06, Hong Kong, May 2006

Conference Organization

• General Co-Chair, MDM 2022, Paphos, Cyprus, June 2022
• General Co-Chair, MDM 2021, Toronto, Canada, June 2021
• Workshop Co-Chair, DASFAA 2021, Taipei, April 2021
• Local Organizing Team Member, ICDE 2019, Macau, April 2019
• Best Paper Committee Member, DASFAA 2017, Suzhou, China, March 2017
• Publicity Co-Chair, IEEE PAC 2017, Washington DC, August 2017
• Publication Co-Chair, NDBC 2016, Shenzhen, China, Oct. 2016
• Publicity Co-Chair, BigCOMP 2016, Hong Kong, China, Jan. 2016
• Student Activities Co-Chair, INFOCOM 2015, Hong Kong, China, April 2015
• Workshop Co-Chair, WAIM 2014, Macau, China, June 2014
• Workshop Co-Chair, MDM 2013, Milan, Italy, June 2013
• Publication Co-Chair, WAIM 2013, Baidaihe, China, June 2013
• Demo Co-Chair, DASFAA 2013, Wuhan, China, April 2013
• Workshop Co-Chair, DASFAA 2011, Hong Kong, April 2011
• Publicity Co-Chair, MDM '09, Taipei, Taiwan, May 2009
• General Co-Chair, ACM-HK Student Research and Career Day, March 2009
• Seminar Co-Chair, MDM '08, Beijing, China, April 2008
• Publication Chair, MSN '06, Hong Kong, December 2006
• Organizing Committee Member, IEEE ICDM / WI / IAT 2006, Hong Kong, December 2006
• Local Arrangement Co-Chair, IEEE INFOCOM '04, Hong Kong, March 2004

TPC Member

• ACM SIGMOD International Conference on Management of Data (SIGMOD): 2011 (Demo Track), 2015, 2022
• International Conference on Very Large Data Bases (VLDB): 2014, 2017, 2018 (AE), 2019, 2020, 2021
• IEEE International Conference on Data Engineering (ICDE): 2009-2012; 2015, 2016 (Demo Track), 2018-2021
• ACM Conference on Information and Knowledge Management (CIKM): 2009, 2010, 2019 (Senior PC)
• International World Wide Web Conference (WWW): 2008, 2009, 2018
• International Conference on Database Systems for Advanced Applications (DASFAA): 2010-2020, 2021 (Senior PC)
• IEEE International Conference on Mobile Data Management (MDM): 2004, 2006, 2008-2018, 2019 (PC Chair), 2020-2021
• APWeb-WAIM Joint Conference on Web and Big Data (APWeb-WAIM): 2017 (Senior PC), 2018 (PC Chair), 2019, 2020
• IEEE International Conference on Big Data (BigData): 2013-2014, 2017-2018 (Senior PC)
• International Conference on Web-Age Information Management (WAIM): 2006-2007, 2009-2015, 2016 (PC Chair)
• Asia-Pacific Web Conference (APWeb): 2007-2016
• ACM Symposium on Applied Computing (SAC): 2003-2015
• International Conference on Distributed Computing in Sensor Systems (DCOSS): 2015
• SIAM International Conference on Data Mining (SDM): 2014
• International Conference on Database- and Expert Systems Applications (DEXA): 2009, 2010
• International Conference on Web Information System Engineering (WISE): 2010, 2011, 2021
• IEEE International Conference on Big Data Science and Engineering (BDSE): 2013
• IFIP international conference on Distributed Applications and Interoperable Systems (DAIS): 2009
• ICDE Workshop on Uncertain Data Management: 2009
• IEEE International Conference on Sensor Networks, Ubiquitous, and Trustworthy Computing (SUTC): 2008
• International Conference on Embedded Software and Systems (ICESS): 2008
• VLDB Workshop on Data Management for Sensor Networks (DMSN): 2006, 2007, 2008, 2010, 2011
• ICDE Workshop on RFID Data Management (RFDM): 2008
• ICDE Workshop on Ambient Intelligence, Media, and Sensing (AIMS): 2007
• MDM Workshop on Privacy-Aware Location-based Mobile Services (PALMS): 2007, 2008, 2009
• SIGMOD PhD Workshop on Innovative Database Research (IDAR): 2007
• IFIP International Conference on Embedded and Ubiquitous Computing (EUC): 2006, 2007, 2008, 2009
• Annual International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (MobiQuitous): 2007
• International Conference on Communications and Networking in China (CHINACOM): 2007, 2008
• SIWN International Conference on Complex Open Distributed Systems (CODS): 2007
• International Conference on Scalable Information Systems (INFOSCALE): 2007, 2009
• International workshop on DataBase Management and Application over Network (DBMAN): 2007
• ICDCS Workshop on Mobile Distributed Computing (MDC): 2004-2007
• Annual IEEE Consumer Communications and Networking Conference (CCNC): 2007
• ICDM Workshop on Spatial and Spatio-temporal Data Mining (SSTDM): 2006
• IEEE TENCON Conference: 2006
• International Workshop on INformation Processing over Evolving Networks (WINPEN): 2006
• International Symposium on Pervasive Computing and Applications: 2006
• International Conference on Mobile Ad-hoc and Sensor Networks (MSN): 2005
• IEEE International Conference on e-Business Engineering (ICEBE): 2005, 2011
• International Symposium on Parallel and Distributed Processing and Applications (ISPA): 2005
• International Conference on Real-Time and Embedded Computing Systems and Applications (RTCSA): 2005
• International Workshop on Web Based Collaboration (WBC): 2003, 2004, 2005
• International Human.Society@Internet Conference (HSI): 2003, 2005
• Annual IEEE Conference INFOCOM: 2004

Journal Reviewer / Referee

• IEEE Transactions on Knowledge and Data Engineering (TKDE)
• IEEE Transactions on Parallel and Distributed Systems (TPDS)
• IEEE Transactions on Mobile Computing (TMC)
• IEEE Transactions on Wireless Communications (TWC)
• IEEE Transactions on Vehicular Technology (TVT)
• ACM Transactions on Storage (TOS)
• Journal on Very Large Data Bases (VLDBJ)
• ACM Journal of Wireless Networks (WINET)
• World Wide Web Journal
• IEEE Personal Communications Magazine
• Information Systems
• Information Sciences
  
• Journal of Systems and Software
• Journal of Computer Science and Technology
• The Computer Journal