Member of the scientific committee of
ROADEF Symposium, Avignon, 26-28 February 2003,
ROADEF Symposium,Tours, 14-16 February 2005,
ROADEF Symposium, Lille, 6-8 February 2006,
ROADEF Symposium, Grenoble, 20-23 February 2007,
ROADEF Symposium, Toulouse, 24-26 February 2010,
ROADEF Symposium, St Etienne, 2-4 February 2011,
ROADEF Symposium, Angers, 11-13 April 2012,
ROADEF Symposium, Troyes, 13-15 February 2013,
ROADEF Symposium, Bordeaux, 26-28 February 2014,
ROADEF Symposium, Marseille, 25-27 February 2015,
ROADEF Symposium, Compiègne, 10-12 February 2016,
ROADEF Symposium, Metz, 22-24 February 2017,
ROADEF Symposium, Lorient 21-23 February 2018,
ROADEF Symposium, Le Havre 19-21 February 2019,
Initiator and organizer of the first Journées Polyèdres et Optimisation Combinatoire (JPOC), Clermont-Ferrand, 19-20 June 2003.
Co-organizer de
JPOC2, Marseille, 2-3 June, 2005,
JPOC3, Avignon, 1-2 June, 2006,
JPOC4, Evry, May and June, 2007,
JPOC5, Rouen, 4-6 June 2008,
JPOC6, Bordeaux, 12-14 June 2009,
JPOC7, Valenciennes, 8-10 June, 2011.
Member of the scientific committee of conference INOC 2003 (International Network Optimization Conference), Evry (France), 27-28 October 2003.
Co-organisateur du 9 ème congrès de la ROADEF, Clermont-Ferrand, 25-27 February 2008.
Member of the scientific committee of International Conference on Computers & Industrial Engineering, Troyes, France, 6-7 July 2009.
Co-organizer of workshop international « Pretty Structures, existential polytime, polyhedral combinatorics », April 7, 8, & 9, 2009, Paris, in honor of Jacques Edmonds.
Initiateur, Co-organizer and Co-Chair of « International Symposium on Combinatorial Optimization (ISCO)», Hammamet, Tunisie, 24-26 March, 2010, and the Spring School « Cutting plane methods for mixed integer programming » Hammamet, Tunisie, 22-23 March, 2010.
Member of the scientific committee of International Symposium on Operations Research (ISRO 2011), Alger, Algeria, 30 May-2 June 2011.
Member of the scientific committee of International Network Optimization Conference (INOC 2011), Hamburg, Germany, 13-16 June 2011.
Co-organizer and Co-Chair of the comittee of ISCO 2012, Athens, Greece, 19-21 April, 2012, and the Spring School « Mathematical Programming and Approximation Algorithms » Athens, Greece, 17-18 April, 2012.
Member of the scientific committee of conference COSI, Tlemcen, 12-15 May,
2012.