Associate Editor of the Proceedings of Very Large Database Systems (PVLDB), 2024-25

Reviewer of 11th Heidelberg Laureate Forum, 2024

Associate Editor of the Frontiers in Big Data

Vice Chair of the 31st ACM SIGSPATIAL Intl. Conf. on Advances in Geographic Information Systems, 2024

Senior PC member of the 29th Intl. Conf. on Database Systems for Advanced Applications (DASFAA), 2024

Admission Panel Member, Hong Kong Science and Technology Parks Corporation (HKSTP) for Incubation Programmes, 2018-24

Associate Chair of the 38th Intl. Conf. on Data Engineering (ICDE), 2022

Senior PC member of the ACM India Joint Intl. Conf. on Data Science and Management of Data (CODS-COMAD), 2024, 2023, 2021

Senior PC member of the Asia-Pacific Web Conference (APWeb-WAIM), 2022, 2021

PC Co-Chair of International Conference on Data Engineering (ICDE), 2021

Area Chair of International Conference on Data Engineering (ICDE), 2017

Senior PC member of IEEE Inteternational Conference on Big Data (IEEE BigData), 2017

Editor-in-Chief (EIC) Search Committee of the IEEE Transactions on Knowledge and Data Engineering, 2017

Editorial Board Member of the IEEE Transactions on Knowledge and Data Engineering (2015-21)

Editorial Board Member of Distributed and Parallel Databases Journal

Editorial Advisory Board Member of Information Systems

Guest Editor of Geoinformatica, 2013

Guest Editor of Distributed and Parallel Databases, 2013

Area Editor of the Encyclopedia of Database Systems, 2nd edition (co-edited by T. Oszu and L. Liu)

Guest Editor of IEEE TKDE, 2010

Vice Chairperson of the ACM Hong Kong Chapter 2012; Workshop Co-chair of ICDE 2014; Program Co-chair of SSTD 2013; Organizer of VLDB 2013, PAKDD 2011 PhD Symposium, ICDE 2010, MDM 2010, ICDE 2009, ICDM 2007 workshops; Registration Chair of CIKM 2009

PC member in more than 60 international conferences/workshops, including ACM SIGMOD, VLDB, IEEE ICDE, KDD, ICDM, CIKM, ACM SIGSPATIAL GIS, and HCOMP

Reviewer of top database and data mining journals, including TODS, VLDBJ, TKDE, IS, IEEE TC, IEEE TWeb, and IEEE ToN