Conference Chair Role
- Poster and Demo chair with Eva Blomqvist for the 11th Extended Semantic Web Conference (ESWC 2014), Heraklion, Crete, May 2014.
- Area chair Authoring & Collaboration for the 21st ACM International Conference on Multimedia (ACM MM 2013), Barcelona, Spain, October 2013.
- Area chair Multimedia creation, synthesis and consumption for the IEEE International Conference on Multimedia and Expo (ICME 2013), San Jose, California, USA, July 2013.
- Conference chair for the 24th Journées Francophones d'Ingénierie des Connaissances (IC 2013), Lille, France, July, 2013.
- Workshops chair with Alexandre Passant for the 9th Extended Semantic Web Conference (ESWC 2012), Heraklion, Crete, May 2012.
- Developers Track chair with Richard Cyganiak for the 21st World Wide Web Conference (WWW 2012), Lyon, France, April 2012.
- Workshops and Tutorials chair for the 6th French Platform on Artificial Intelligence (AFIA 2009), Hammamet, Tunisia, May 2009.
- Panel chair for the 5th European Semantic Web Conference (ESWC 2008), Tenerife, Spain, June 2008.
- Workshops and Tutorials chair for the 1st International Conference on Semantics And digital Media Technology (SAMT 2006), Athens, Greece, December 2006.