This page lists my activities in service to the research community. In particular, you find lists of:

Co-organized Events (currently)

Resource Track Co-Chair of the 23rd Extended Semantic Web Conference (ESWC), May 2026, Dubrovnik, Croatia
Co-organizer of the 2nd International Workshop on Data Management for Knowledge Graphs (DMKG) at the 25th ISWC Conference, October 2026, Bari, Italy

Co-organized Events (previously)

Program Co-Chair of the 31st International Conference on Cooperative Information Systems (CoopIS), October 2025, Marbella, Spain
In-Use Track Co-Chair of the 21st Extended Semantic Web Conference (ESWC), May 2024, Hersonissou, Greece
Tutorials Co-Chair of the Web Conference (WWW), May 2023, Austin, TX, USA
Doctoral Consortium Co-Chair of the 21st International Semantic Web Conference (ISWC), October 2022, Hangzhou, China
Doctoral Consortium Co-Chair of the 25th Extended Conference on Advances in Databases and Information Systems (ADBIS), August 2021, Tartu, Estonia
Replication Studies Track Co-Chair of the 18th Extended Semantic Web Conference (ESWC), June 2021, Heraklion, Greece
Workshops & Tutorials Co-Chair of the 17th Extended Semantic Web Conference (ESWC), June 2020, Heraklion, Greece
Research Track Co-Chair of the 18th International Semantic Web Conference (ISWC), October 2019, Auckland, New Zealand
Posters & Demos Track Co-Chair of the 16th Extended Semantic Web Conference (ESWC), June 2019, Portoroz, Slovenia
Proceedings Chair of the 14th Extended Semantic Web Conference (ESWC), May 2017, Portoroz, Slovenia
Semantic Technologies Coordinator of the 9th Extended Semantic Web Conference (ESWC), May 2012, Heraklion, Greece
Co-organizer of a tutorial week on Linked Data and Semantic Web technologies at Linköping University, Sweden, March 2018
Co-organizer of the Dagstuhl Seminar on Federated Semantic Data Management, June 2017, Schloss Dagstuhl, Germany (official report for the seminar, brief personal report)
Co-organizer of the 6th Linked Data in Sweden Day (LDSV) at Linköping University, Sweden, April 2017
Co-organizer of the 7th Joint Workshop on Graph Data Management Experiences & Systems (GRADES) and Network Data Analytics (NDA), GRADES-NDA at the ACM SIGMOD Conference, June 2024, Santiago, Chile
Co-organizer of the 6th Joint Workshop on Graph Data Management Experiences & Systems (GRADES) and Network Data Analytics (NDA), GRADES-NDA at the ACM SIGMOD Conference, June 2023, Seattle, WA, USA
Co-organizer of the 1st International Workshop on Data Management for Knowledge Graphs (DMKG) at the 20th ESWC Conference, May 2023, Hersonissou, Greece
Co-organizer of the 2nd International Workshop on Querying the Web of Data (QuWeDa) at the 15th Extended Semantic Web Conference (ESWC), June 2018, Hersonissou, Greece
Co-organizer of the 7th International Workshop on Consuming Linked Data (COLD) at the 15th International Semantic Web Conference (ISWC), October 2016, Kobe, Japan
Co-organizer of the 6th International Workshop on Consuming Linked Data (COLD) at the 14th International Semantic Web Conference (ISWC), October 2015, Bethlehem, Pennsylvania, USA
Co-organizer of the 5th International Workshop on Consuming Linked Data (COLD) at the 13th International Semantic Web Conference (ISWC), October 2014, Riva del Garda, Italy
Co-organizer of the 3rd International Workshop on Methods for Establishing Trust of (Open) Data (METHOD) at the 13th International Semantic Web Conference (ISWC), October 2014, Riva del Garda, Italy
Co-organizer of the 4th International Workshop on Consuming Linked Data (COLD) at the 12th International Semantic Web Conference (ISWC), October 2013, Sydney, Australia
Co-organizer of the 3rd International Workshop on Consuming Linked Data (COLD) at the 11th International Semantic Web Conference (ISWC), November 2012, Boston, USA
Co-organizer of the 2nd Linked Data-a-thon at the 10th International Semantic Web Conference (ISWC), October 2011, Bonn, Germany
Co-organizer of the 2nd International Workshop on Consuming Linked Data (COLD) at the 10th International Semantic Web Conference (ISWC), October 2011, Bonn, Germany
Co-organizer of the 1st International Workshop on Consuming Linked Data (COLD) at the 9th International Semantic Web Conference (ISWC), November 2010, Shanghai, China

Journal Reviews

Journal of Web Semantics (JWS): 2010 (3 times), 2011, 2014, 2015, 2016, 2017, 2018
Semantic Web Journal (SWJ): 2014, 2016, 2017, 2018, 2020 (2 times), 2021 (2 times), 2022 (3 times), 2023 (5 times), 2024 (3 times), 2025 (2 times), 2026
Transactions on Graph Data and Knowledge (TGDK): 2025
VLDB Journal: 2016, 2024, 2025
International Journal of Cooperative Information Systems (IJCIS): 2026
PeerJ Computer Science: 2022
ACM Computing Surveys: 2016
ACM Journal of Data and Information Quality (JDIQ): 2014, 2015, 2016 (2 times)
Information Systems (IS): 2014, 2015
IEEE Transactions on Knowledge and Data Engineering (TKDE): 2013, 2016, 2017 (2 times)
IEEE Computer: 2013
International Journal on Semantic Web and Information Systems (IJSWIS): 2013
Knowledge and Information Systems (KAIS): 2011
PLOS ONE: 2017

Program Committees

25th International Semantic Web Conference (ISWC), October 2026, Bari, Italy (Senior PC Member)
Doctoral Consortium of the 23rd Extended Semantic Web Conference (ESWC), May 2026, Dubrovnik, Croatia
2nd Workshop on Trust, Autonomy and Accountability in PKG-Based Agentic AI (TAAPAAI), May 2026, Dubrovnik, Croatia
24th International Semantic Web Conference (ISWC), November 2025, Nara, Japan (Senior PC Member)
Doctoral Consortium of the 22nd International Semantic Web Conference (ISWC), November 2025, Nara, Japan
SEMANTICS 2025 Developers Workshop (SemDev), September 2025, Vienna, Austria
22nd Extended Semantic Web Conference (ESWC), June 2025, Portoroz, Slovenia (Senior PC Member)
3rd International Workshop on Knowledge Graphs for Sustainability (KG4S), June 2025, Portoroz, Slovenia
25th International Conference on Business Information Systems (BIS), June 2025, Poznań, Poland
23rd International Semantic Web Conference (ISWC), November 2024, Baltimore, Maryland, USA (Senior PC Member)
3rd Workshop on Search, Exploration, and Analysis in Heterogeneous Datastores: Graph Edition (SEA Graph) at ICDE, May 2024, Utrecht, Netherlands
21st Extended Semantic Web Conference (ESWC), May 2024, Hersonissou, Crete, Greece (Senior PC Member)
Doctoral Consortium of the 21st Extended Semantic Web Conference (ESWC), May 2024, Hersonissou, Crete, Greece
2nd International Workshop on Knowledge Graphs for Sustainability (KG4S), May 2024, Hersonissou, Crete, Greece
22nd International Semantic Web Conference (ISWC), November 2023, Athens, Greece (Senior PC Member)
Doctoral Consortium of the 22nd International Semantic Web Conference (ISWC), November 2023, Athens, Greece
7th Workshop on Storing, Querying and Benchmarking Knowledge Graphs (QuWeDa), November 2023, Athens, Greece
1st International Workshop on Knowledge Graphs for Sustainability (KG4S), May 2023, Austin, TX, USA
1st Trusting Decentralised Knowledge Graphs and Web Data (TrusDeKW) Workshop, May 2023, Austin, TX, USA
20th Extended Semantic Web Conference (ESWC), May 2023, Hersonissou, Crete, Greece (Senior PC Member)
Doctoral Consortium of the 20th Extended Semantic Web Conference (ESWC), May 2023, Hersonissou, Crete, Greece
21st International Semantic Web Conference (ISWC), October 2022, Hangzhou, China (Senior PC Member)
6th Workshop on Storing, Querying and Benchmarking Knowledge Graphs (QuWeDa), October 2022, Hangzhou, China
19th Extended Semantic Web Conference (ESWC), May 2022, Hersonissou, Crete, Greece (Best Review Award winner)
Doctoral Consortium of 19th Extended Semantic Web Conference (ESWC), May 2022, Hersonissou, Crete, Greece
The Web Conference 2022, April 2022, Lyon, France (Senior PC Member)
10th International Joint Conference on Knowledge Graphs (IJCKG 2021), December 2021, online / Bangkok, Thailand (Senior PC Member)
20th International Semantic Web Conference (ISWC), October 2021, online (Senior PC Member)
1st Workshop on Squaring the Circle on Graphs (SCG), September 2021, online
2nd Workshop on Search, Exploration, and Analysis in Heterogeneous Datastores (SEA Data) at VLDB, August 2021, Copenhagen, Denmark
18th Extended Semantic Web Conference (ESWC), June 2021, Hersonissou, Crete, Greece
The Web Conference 2021, April 2021, Ljubljana, Slovakia
19th International Semantic Web Conference (ISWC), November 2020, Athens, Greece (Senior PC Member)
4th Workshop on Querying and Benchmarking the Web of Data (QuWeDa), November 2020, Athens, Greece
17th Extended Semantic Web Conference (ESWC), June 2020, Heraklion, Crete, Greece
The Web Conference 2020, April 2020, Taipei, Taiwan
16th Extended Semantic Web Conference (ESWC), June 2019, Portoroz, Slovenia
13th Alberto Mendelzon International Workshop on Foundation of Databases and the Web (AMW), June 2019, Asunción, Paraguay
The Web Conference 2019, May 2019, San Francisco, USA
Doctoral Consortium of the 17th International Semantic Web Conference (ISWC), October 2018, Monterey, CA, USA
2nd Decentralized Semantic Web Workshop (DeSemWeb), October 2018, Monterey, CA, USA
15th Extended Semantic Web Conference (ESWC), June 2018, Heraklion, Crete, Greece (Co-Chair of the Semantic Data Management and Big Data Track)
2nd Querying the Web of Data Workshop (QuWeDa), June 2018, Heraklion, Crete, Greece
The Web Conference (27th International World Wide Web Conference - WWW 2018), April 2018, Lyon, France
16th International Semantic Web Conference (ISWC), October 2017, Vienna, Austria (Senior PC Member)
13th International Conference on Semantic Systems (SEMANTiCS), September 2017, Amsterdam, The Netherlands
11th Alberto Mendelzon International Workshop on Foundation of Databases and the Web (AMW), June 2017, Montevideo, Uruguay
14th Extended Semantic Web Conference (ESWC), May 2017, Portoroz, Slovenia
1st Querying the Web of Data Workshop (QuWeDa), May 2017, Portoroz, Slovenia
26th International World Wide Web Conference (WWW), April 2017, Perth, Australia
15th International Semantic Web Conference (ISWC), October 2016, Kobe, Japan
1st International Workshop on Benchmarking Linked Data (BLINK), October 2016, Kobe, Japan
ProvenanceWeek 2016, June 2016, Washington, D.C., USA
13th Extended Semantic Web Conference (ESWC), May 2016, Heraklion, Crete, Greece
25th International World Wide Web Conference (WWW), April 2016, Montreal, Canada
6th International Workshop on Linked Web Data Management (LWDM), March 2016, Bordeaux, France
4th International Workshop on Methods for Establishing Trust of (Open) Data (METHOD), October 2015, Bethlehem, PA, USA
12th Extended Semantic Web Conference (ESWC), June 2015, Portoroz, Slovenia
31st IEEE International Conference on Data Engineering (ICDE), April 2015, Seoul, Korea
5th International Workshop on Linked Web Data Management (LWDM), March 2015, Brussels, Belgium
10th International Conference on Semantic Systems (SEMANTiCS), September 2014, Leipzig, Germany
1st International Workshop on Hyperlinking in the Web of Linked Things (WLT), September 2014, Santiago, Chile
11th Extended Semantic Web Conference (ESWC), May 2014, Anissaras/Hersonissou, Crete, Greece
7th Linked Data on the Web Workshop (LDOW), April 2014, Seoul, Korea
5th International Workshop on Data Engineering meets the Semantic Web (DESWEB), April 2014, Chicago, IL, USA
4th International Workshop on Linked Web Data Management (LWDM), March 2014, Athens, Greece
18th International Conference on Information Quality (ICIQ), November 2013, Little Rock, AR, USA
1st Workshop on Legal Knowledge and the Semantic Web (LK&SW), December 2013, Bologna, Italy
9th International Conference on Semantic Systems (I-Semantics), September 2013, Graz, Austria
2nd IEEE International Workshop on Methods for Establishing Trust with Open Data (METHOD), July 2013, Kyoto, Japan
10th Extended Semantic Web Conference (ESWC), May 2013, Montpellier, France
6th International Workshop on Resource Discovery (RED), May 2013, Montpellier, France
22nd International World Wide Web Conference (WWW), May 2013, Rio de Janeiro, Brazil
3rd International Workshop on Linked Web Data Management (LWDM), March 2013, Genoa, Italy
12th International Conference on Web Engineering (ICWE), July 2012, Berlin, Germany
1st Workshop on Methods for Establishing Trust with Open Data (METHOD), July 2012, Izmir, Turkey
4th International Provenance and Annotation Workshop (IPAW), June 2012, Santa Barbara, California, USA
9th Extended Semantic Web Conference (ESWC), May 2012, Heraklion, Greece
3rd International Workshop on the Role of Semantic Web in Provenance Management (SWPM), May 2012, Heraklion, Greece
21th International World Wide Web Conference (WWW), April 2012, Lyon, France
5th Linked Data on the Web Workshop (LDOW), April 2012, Lyon, France
16th International Conference on Information Quality (ICIQ), November 2011, Adelaide, Australia
4th Social Data on the Web Workshop (SDoW), October 2011, Bonn, Germany
7th International Conference on Semantic Systems (I-Semantics), September 2011, Graz, Austria
2nd International Workshop on Traceability and Compliance of Semi-Structured Processes (TC4SP), August 2011, Clermont-Ferrand, France
22nd International Joint Conference on Artificial Intelligence (IJCAI), July 2011, Barcelona, Spain (Senior PC Member)
11th International Conference on Web Engineering (ICWE), June 2011, Paphos, Cyprus (Best Review Award winner)
8th Extended Semantic Web Conference (ESWC), Semantic Data Management Track, June 2011, Heraklion, Greece
4th Linked Data on the Web Workshop (LDOW), March 2011, Hyderabad, India
IUI Workshop on Context-aware Retrieval and Recommendation (CaRR), February 2011, Palo Alto, USA
9th International Semantic Web Conference (ISWC), Poster and Demo Track, November 2010, Shanghai, China
3rd Social Data on the Web Workshop (SDoW), November 2010, Shanghai, China
2nd International Workshop on the Role of Semantic Web in Provenance Management (SWPM), November 2010, Shanghai, China
15th International Conference on Information Quality (ICIQ), November 2010, Little Rock, Arkansas, USA
1st International Workshop on Traceability and Compliance of Semi-Structured Processes (TC4SP), September 2010, Hoboken, NJ, USA
Triplification Challenge 2010 at I-Semantics, September 2010, Graz, Austria
6th International Conference on Semantic Systems (I-Semantics), September 2010, Graz, Austria
2nd Conference on Semantic Technology and Knowledge Engineering (STAKE), July 2010, Kuching, Sarawak, Malaysia
3rd International Provenance and Annotation Workshop (IPAW), June 2010, Troy, New York, USA
7th Extended Semantic Web Conference (ESWC), In Use Track, June 2010, Heraklion, Greece
2nd Workshop on Trust and Privacy on the Social and Semantic Web (SPOT), June 2010, Heraklion, Greece
3rd Linked Data on the Web Workshop (LDOW), April 2010, Raleigh, North Carolina, USA
2nd Social Data on the Web Workshop (SDoW), October 2009, Washington DC, USA
5th International Conference on Semantic Systems (I-Semantics), September 2009, Graz, Austria
2nd Linked Data on the Web Workshop (LDOW), April 2009, Madrid, Spain

Other Activities

Working Group Leader in COST action CA19134, Distributed Knowledge Graphs, 2019-2024
Evaluator for the German Research Foundation (DFG), 2025 (2 times), 2026
Evaluator for the Belgian Fund for Scientific Research (F.R.S.–FNRS), 2023
Evaluator for the Chilean National Science and Technology Commission (CONICYT), 2021
Evaluator for the Chilean National Science and Technology Commission (CONICYT), 2015
Evaluator for the Dagstuhl scientific seminar program, 2023 and 2024
PhD Committee Member for Robin Keskisärkkä (Linköping University, licenciate committee, 2017), Ruben Taelman (Ghent University, 2019), Rudra Pratap Deb Nath (Aalborg University, 2020), Julian Bruyat (Université de Lyon, 2024), Lukas Laskowski (University of Potsdam, 2026)
Associate Editor of the Transactions on Graph Data and Knowledge (TGDK), since January 2023
Associate Editor of the Journal of Web Semantics, 2017-2023
Co-editor of the Semantic Web Journal special issue on "Storing and Querying the Web of Data", 2020
Co-editor of the "Big Semantic Data Processing" section of the Encyclopedia of Big Data Technologies published by Springer, since 2017
Invited Expert in the W3C RDF-star Working Group
Invited Expert in the W3C Provenance Working Group
Invited Expert in the W3C Provenance Incubator Group
Scientific Committee Member for the 12th EDBT Summer School, September 2015, Palamos, Spain
Participant of the Dagstuhl seminar on "Trust and Accountability in Knowledge Graph-Based AI for Self Determination", January 2025, Schloss Dagstuhl, Germany (Report from the seminar)
Participant of the NII Shonan Meeting on "Understanding the ''Why'' of Data and Knowledge Models", September 2024, Shonan Village Center, Japan
Participant of the Dagstuhl seminar on "Are Knowledge Graphs Ready for the Real World? Challenges and Perspective", February 2024, Schloss Dagstuhl, Germany (Report from the seminar)
Participant of the Dagstuhl seminar on "Big Graph Processing Systems", December 2019, Schloss Dagstuhl, Germany (Report from the seminar)
Participant of the NII Shonan Meeting on "Graph Database Systems: Bridging Theory, Practice, and Engineering", July 2018, Shonan Village Center, Japan
Participant of the Dagstuhl seminar on "Principles of Provenance", February 2012, Schloss Dagstuhl, Germany (Report from the seminar)
Participant of the Dagstuhl seminar on "Semantic Data Management", April 2012, Schloss Dagstuhl, Germany (Report from the seminar)

Tutorials

Tutorial presenter of the tutorial "An Introduction to GraphQL" at the 18th International Semantic Web Conference (ISWC), October 2019, Auckland, New Zealand
Tutorial presenter of the tutorial "Semantic Data Management in Practice" at the 16th International Semantic Web Conference (ISWC), October 2017, Vienna, Austria
Tutorial presenter of the tutorial "Semantic Data Management in Practice" at the 26th International World Wide Web Conference (WWW), April 2017, Perth, Australia
Tutorial presenter of the tutorial "Linked Data Query Processing" at the 30th International Conference on Data Engineering (ICDE), April 2014, Chicago, IL, USA
Tutorial presenter of the tutorial "Getting to know PROV - the W3C Provenance Specifications" at the 10th Extended Semantic Web Conference (ESWC), May 2013, Montpellier, France
Tutorial presenter of the tutorial "Linked Data Query Processing" at the 22th International World Wide Web Conference (WWW), May 2013, Rio de Janeiro, Brazil
Tutorial presenter of the tutorial "An Introduction to SPARQL and Queries over Linked Data" at the 12th International Conference on Web Engineering (ICWE), July 2012, Berlin, Germany
Tutorial presenter of the tutorial "How to Consume Linked Data on the Web" at the 19th International World Wide Web Conference (WWW), April 2010, Raleigh, NC, USA
Tutorial presenter of the tutorial "How to Consume Linked Data on the Web" at the 8th International Semantic Web Conference (ISWC), October 2009, Washington DC, USA
Tutorial presenter of the tutorial "How to Publish Linked Data on the Web" at the 7th International Semantic Web Conference (ISWC), October 2008, Karlsruhe, Germany
Lecturer at the Indian-Summer School on Linked Data, September 2011, Leipzig, Germany