| 2025 |
| ICDE'26 | 42nd IEEE Int. Conf. on Data Engineering | Area Chair |
| ASONAM'25 | IEEE/ACM Int. Conf. on Adv. in Social Networks Analysis and Mining | Interdisciplinary Track Chair |
| CASCON'25 | 35th Conf. of the IBM Center for Advanced Studies on Collaborative Research | PC member |
| 2024 |
| CASCON'24 | 34th Conf. of the IBM Center for Advanced Studies on Collaborative Research | PC member |
| 2023 |
| CASCON'23 | 33rd Conf. of the IBM Center for Advanced Studies on Collaborative Research | PC member |
| 2022 |
| SIGMOD'22 | ACM Int. Conf. on Management of Data | PC member |
| CASCON'22 | 32nd Conf. of the IBM Center for Advanced Studies on Collaborative Research | PC member |
| WWW'22 | The Web Conference | PC member |
| ICDE'22 | 38th IEEE Int. Conf. on Data Engineering | PC member |
| 2021 |
| CASCON'20 | 30th Conf. of the IBM Center for Advanced Studies on Collaborative Research | PC member |
| 2020 |
| ASONAM'19 | IEEE/ACM Int. Conf. on Adv. in Social Networks Analysis and Mining | PC member |
| 2019 |
| FoIKS'20 | 10th Int. Symposium on Foundations of Information and Knowledge Systems | PC member |
| VLDB'18 | 44th Int. Conf. on Very Large Data Bases | PC member |
| 2018 |
| KDD'18 | 24th ACM SIGKDD Int. Conf. on Knowledge Discovery and Data Mining | PC member |
| WAIM'18 | 19th Int. Conf. on Web-Age Information Management | PC member |
| FoIKS'18 | 9th Int. Symposium on Foundations of Information and Knowledge Systems | PC member |
| 2017 |
| CIKM'17 | 26th ACM Int. Conf. on Information and Knowledge Management | PC member |
| APWeb'17 | 19th Asia-Pacific Web Conf. | PC member |
| 2016 |
| KDD'16 | 22nd ACM SIGKDD Int. Conf. on Knowledge Discovery and Data Mining | PC member |
| CASCON'16 | 26th Conf. of the IBM Center for Advanced Studies | PC member |
| APWeb'16 | 18th Asia-Pacific Web Conf. | PC member |
| WAIM'16 | 17th Int. Conf. on Web-Age Information Management | PC member |
| IoP'16 | 2nd IEEE Int. Conf. on Internet of People | PC member |
| ARES'16 | 11th Int. Conf. on Availability, Reliability and Security | PC member |
| MISNC'16 | 3rd Multidisciplinary Int. Social Networks Conf. | PC member |
| SKG'16 | 12th Int. Conf. on Semantics, Knowledge and Grids | PC member |
| MobiSPC'16 | 13th Int. Conf. on Mobile Systems and Pervasive Computing | PC member |
| FoIKS'16 | 9th Int. Symposium on Foundations of Information and Knowledge Systems | PC member |
| 2015 |
| KDD'15 | 21st ACM SIGKDD Int. Conf. on Knowledge Discovery and Data Mining | PC member |
| CASCON'15 | 25th Conf. of the IBM Center for Advanced Studies | PC member |
| APWeb'15 | 17th Asia-Pacific Web Conf. | PC member |
| BESC'15 | Int. Conf. on Behavioral, Economic, and Socio-Cultural Computing | PC member |
| MobiSPC'15 | 12th Int. Conf. on Mobile Systems and Pervasive Computing | PC member |
| CoHeB'15 | 3rd Int. Workshop on Collaboration Technologies in Healthcare and Biomedical Fields | PC member |
| MISNC'15 | 2nd Multidisciplinary Int. Social Networks Conf. | PC member |
| WAIM'15 | 16th Int. Conf. on Web-Age Information Management | PC member |
| AINA'15 | 29th IEEE Int. Conf. on Advanced Information Networking and Applications | PC member |
| 2014 |
| KDD'14 | 20th ACM SIGKDD Int. Conf. on Knowledge Discovery and Data Mining | PC member |
| CASCON'14 | 24th Conf. of the IBM Center for Advanced Studies | PC member |
| ASONAM'14 | IEEE/ACM Int. Conf. on Adv. in Social Networks Analysis and Mining | PC member |
| APWeb'14 | 16th Asia-Pacific Web Conf. | PC member |
| BESC'14 | Int. Conf. on Behavioral, Economic, and Socio-Cultural Computing | PC member |
| SNAM-DT'14 | Int. Workshop on Social Network Analysis and Mining using Digital Technology | PC member |
| CoHeB'14 | 2nd Int. Workshop on Collaboration Technologies in Healthcare and Biomedical Fields | PC member |
| FoIKS'14 | 8th Int. Symposium on Foundations of Information and Knowledge Systems | PC member |
| AINA'14 | 28th IEEE Int. Conf. on Advanced Information Networking and Applications | PC co-chair |
| 2013 |
| KDD'13 | 19th ACM SIGKDD Int. Conf. on Knowledge Discovery and Data Mining | PC member |
| CIKM'13 | 22nd ACM Conf. on Information and Knowledge Management | PC member |
| ASONAM'13 | IEEE/ACM Int. Conf. on Adv. in Social Networks Analysis and Mining | PC member |
| INCoS'13 | 5th Int. Conf. on Intelligent Networking and Collaborative Systems | PC co-chair |
| ANT'13 | 4th Int. Conf. on Ambient Systems, Networks and Technologies | PC member |
| EUSPN'13 | 4th Int. Conf. on Emerging Ubiquitous Systems and Pervasive Networks | PC member |
| 2012 |
| KDD'12 | 18th ACM SIGKDD Int. Conf. on Knowledge Discovery and Data Mining | PC member |
| CASCON'12 | 22nd Conf. of the IBM Center for Advanced Studies | PC member |
| APWeb'12 | 14th Asia-Pacific Web Conf. | PC member |
| ANT'12 | 3rd Int. Conf. on Ambient Systems, Networks and Technologies | PC member |
| FoIKS'12 | 7th Int. Symposium on Foundations of Information and Knowledge Systems | PC member |
| 2011 |
| CIKM'11 | ACM Int. Conf. on Information and Knowledge Management | PC member |
| ICDM'11 | IEEE Int. Conf. on Data Mining | Demo co-chair |
| ASONAM'11 | IEEE Int. Conf. on Adv. in Social Networks Analysis and Mining | PC member |
| APWeb'11 | 13th Asia-Pacific Web Conf. | PC member |
| 2010 |
| ASONAM'10 | IEEE Int. Conf. on Adv. in Social Networks Analysis and Mining | PC member |
| CASCON'10 | 20th Conf. of the IBM Center for Advanced Studies | PC member |
| SDM'10 | SIAM Int. Conf. on Data Mining | PC member |
| CFI LOF | Committee for the Canada Foundation for Innovation Leaders Opportunity Fund | Member |
| 2009 |
| ETheCoM'09 | Workshop: Evolving Theories of Conceptual Modeling | PC member |
| 2008 |
| SIGMOD'08 | ACM SIGMOD Int. Conf. on Management of Data | Local Demo Chair |
| SECASA'08 | IEEE Int. Workshop on Software Engineering for Context Aware Systems and Applications | PC member |
| LID'08 | Logic in Databases | PC member |
| 2007 |
| DMIR'07 | IEEE Int. Symp. on Data Mining and Information Retrieval | PC member |