People

Pierre Lopez

Pierre Lopez

Research team

ROC : Operations Research, Combinatorial Optimization and Constraints

Direction

Direction Team

Contact details

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Links

Latest publications

2024

Conference papers

Julien Rouzot, Joséphine Gobert, Christian Artigues, Romain Boyer, Frédéric Camps, et al.. Scheduling onboard tasks of the NIMPH nanosatellite. 13th International Conference on Operations Research and Enterprise Systems (ICORES), Feb 2024, Rome, Italy. ⟨hal-04430171⟩

2023

Journal articles

Carla Juvin, Laurent Houssin, Pierre Lopez. Logic-based Benders decomposition for the preemptive Flexible Job-Shop Scheduling Problem. Computers & Operations Research, 2023, 152, ⟨10.1016/j.cor.2023.106156⟩. ⟨hal-03696252⟩

Oliver Polo Mejia, Christian Artigues, Pierre Lopez, Lars Mönch, Virginie Basini. Heuristic and metaheuristic methods for the multi‐skill project scheduling problem with partial preemption. International Transactions in Operational Research, 2023, 30 (2), pp.858-891. ⟨10.1111/itor.13063⟩. ⟨hal-03475868⟩

Tamara Borreguero Sanchidrián, Tom Portoleau, Christian Artigues, Alvaro García Sánchez, Miguel Ortega Mier, et al.. Large neighborhood search for an aeronautical assembly line time-constrained scheduling problem with multiple modes and a resource leveling objective. Annals of Operations Research, In press, ⟨10.1007/s10479-023-05629-3⟩. ⟨hal-04229939⟩

Conference papers

Julien Rouzot, Christian Artigues, Philippe Garnier, Emmanuel Hebrard, Pierre Lopez. Une contrainte globale pour l'ordonnancement des transferts de données dans les missions spatiales. Journées Francophones de Programmation par Contraintes (JFPC 2023), Jul 2023, Strasbourg, France. pp.115-119. ⟨hal-04171325⟩

Julien Rouzot, Christian Artigues, Philippe Garnier, Emmanuel Hebrard, Pierre Lopez. Global constraints for scheduling data transfer in space missions. 13th International Workshop on Planning and Scheduling for Space (IWPSS 2023), Steve Chien, Juan Manuel Delfa and Tiago Stegun Vaquero, Jul 2023, Prague, Czech Republic. pp.93-95. ⟨hal-04171352⟩

Carla Juvin, Laurent Houssin, Pierre Lopez. Approche hybride multi-étape pour la résolution du problème de job-shop flexible robuste avec budget d'incertitude. 24e congrès de la Société française de recherche opérationnelle et d'aide à la décision (ROADEF 2023), Rennes School of Business, Feb 2023, Rennes, France. ⟨hal-03998579⟩

Carla Juvin, Emmanuel Hebrard, Laurent Houssin, Pierre Lopez. An Efficient Constraint Programming Approach to Preemptive Job Shop Scheduling. 29th International Conference on Principles and Practice of Constraint Programming, Aug 2023, Toronto ( CA ), Canada. pp.19, ⟨10.4230/LIPIcs.CP.2023.19⟩. ⟨hal-04245373⟩

Carla Juvin, Laurent Houssin, Pierre Lopez. Hybrid Methods to Solve the Two-Stage Robust Flexible Job-Shop Scheduling Problem with Budgeted Uncertainty. 12th International Conference on Operations Research and Enterprise Systems (ICORES), Feb 2023, Lisbonne, Portugal. pp.135-142. ⟨hal-03963343⟩

Carla Juvin, Laurent Houssin, Pierre Lopez. Constraint programming for the robust two-machine flow-shop scheduling problem with budgeted uncertainty. 20th International Conference on the Integration of Constraint Programming, Artificial Intelligence, and Operations Research (CPAIOR), May 2023, Nice, France. pp.354-359. ⟨hal-03963365⟩

Preprints, Working Papers, ...

Carla Juvin, Laurent Houssin, Pierre Lopez. Decomposition methods for the preemptive Flexible Job-Shop Scheduling Problem. 2023. ⟨hal-04243944⟩

2022

Conference papers

Tom Portoleau, Christian Artigues, Tamara Borreguero Sanchidrián, Alvaro García Sánchez, Miguel Ortega Mier, et al.. Large neighborhood search for a multi-mode resource constrained scheduling problem with resource leveling objective. 18th International Workshop on Project Management and Scheduling (PMS 2022), Apr 2022, Ghent, Belgium. ⟨hal-03747831⟩

Carla Juvin, Laurent Houssin, Pierre Lopez. Décomposition de Benders basée sur la logique pour le problème de job-shop flexible préemptif. 23ème congrès annuel de la Société Française de Recherche Opérationnelle et d'Aide à la Décision, INSA Lyon, Feb 2022, Villeurbanne - Lyon, France. ⟨hal-03595271⟩

Carla Juvin, Laurent Houssin, Pierre Lopez. Logic-based Benders Decomposition for preemptive Flexible Job-Shop Scheduling. 18th International Conference on Project Management and Scheduling (PMS 2022), Apr 2022, Ghent, Belgium. ⟨hal-03607646⟩

Emmanuel Hébrard, Christian Artigues, Pierre Lopez, Arnaud Lusson, Steve A. Chien, et al.. Data transfer scheduling for deep space exploration. The 15th Workshop on Models and Algorithms for Planning and Scheduling 2022 (MAPSP 2022), Jun 2022, Oropa (Biella), Italy. ⟨hal-03747747⟩

Emmanuel Hébrard, Christian Artigues, Pierre Lopez, Arnaud Lusson, Steve A. Chien, et al.. An Efficient Approach to Data Transfer Scheduling for Long Range Space Exploration. The 31st International Joint Conference on Artificial Intelligence (IJCAI-ECAI 2022), Jul 2022, Vienna, Austria. pp.4635-4641, ⟨10.24963/ijcai.2022/643⟩. ⟨hal-03747736⟩

2021

Conference papers

Christian Artigues, Pierre Lopez, Oliver Polo Mejía. Structural and Experimental Comparisons of Formulations for a Multi-Skill Project Scheduling Problem with Partial Preemption. 17th International Conference on Project Management and Scheduling (PMS 2020), Apr 2021, Toulouse, France. ⟨hal-03009960⟩

Preprints, Working Papers, ...

Tamara Borreguero Sanchidrián, Tom Portoleau, Christian Artigues, Alvaro García Sánchez, Miguel Ortega Mier, et al.. Exact and heuristic methods for an aeronautical assembly line time-constrained scheduling problem with multiple modes and a resource leveling objective. 2021. ⟨hal-03344445⟩

2020

Journal articles

Christian Artigues, Emmanuel Hebrard, Pierre Lopez. Aide à la Décision et Optimisation. Le petit illustré, regards croisés de chercheur.es, 2020. ⟨hal-03435454⟩

Oliver Polo Mejia, Christian Artigues, Pierre Lopez, Virginie Basini. Mixed-integer/linear and constraint programming approaches for activity scheduling in a nuclear research facility. International Journal of Production Research, 2020, 58 (23), pp.7149-7166. ⟨10.1080/00207543.2019.1693654⟩. ⟨hal-02403838⟩

Conference papers

Christian Artigues, Pierre Lopez, Oliver Polo Mejía. Programmation linéaire en nombres entiers pour l'ordonnancement de projet multi-compétence avec préemption partielle. 13th International Conference on Modeling, Optimization and Simulation (MOSIM 2020), Nov 2020, Agadir, Maroc. ⟨hal-03010078⟩

2019

Journal articles

Margaux Nattaf, Tamás Kis, Christian Artigues, Pierre Lopez. Polyhedral results and valid inequalities for the Continuous Energy-Constrained Scheduling Problem. Discrete Applied Mathematics, 2019, 258, pp.188-203. ⟨10.1016/J.DAM.2018.11.008⟩. ⟨hal-01391403⟩

Conference papers

Oliver Polo Mejia, Christian Artigues, Pierre Lopez, Lars Mönch. Memory and feasibility indicators in GRASP for Multi-Skill Project Scheduling with Partial Preemption. XIII Metaheuristics International Conference (MIC 2019), Jul 2019, Carthagène des Indes, Colombia. pp.153-156. ⟨hal-02264213⟩

Oliver Polo Mejia, Christian Artigues, Pierre Lopez. A heuristic method for the Multi-Skill Project Scheduling Problem with Partial Preemption. 8th International Conference on Operations Research and Enterprise Systems (ICORES 2019), Feb 2019, Prague, Czech Republic. pp.111-120, ⟨10.5220/0007390001110120⟩. ⟨hal-02264226⟩

Oliver Polo Mejia, Christian Artigues, Pierre Lopez. Algorithme glouton et recherche locale arborescente pour le MSPSP avec préemption partielle. 20e congrès annuel de la société Française de Recherche Opérationnelle et d’Aide à la Décision (ROADEF 2019), Feb 2019, Le Havre, France. ⟨hal-02352265⟩

Autres documents

Dimitri Peaucelle, Marie-José Huguet, Yannick Pencolé, Christian Artigues, Emmanuel Hébrard, et al.. Bilan et prospectives 2019 du département Décision & Optimisation du LAAS-CNRS. Rapport LAAS n° 19270. 2019. ⟨hal-02295816⟩

2018

Conference papers

Oliver Polo Mejia, Marie-Christine Anselmet, Christian Artigues, Pierre Lopez. MSPSP avec préemption partielle pour l'ordonnancement des activités d'un laboratoire nucléaire. 19e congrès annuel de la société Française de Recherche Opérationnelle et d’Aide à la Décision (ROADEF 2018), Feb 2018, Lorient, France. 2p. ⟨hal-02352244⟩

Oliver Polo Mejia, Marie-Christine Anselmet, Christian Artigues, Pierre Lopez. Mixed-integer and constraint programming formulations for a multi-skill project scheduling problem with partial preemption. 12th International Conference on Modelling, Optimization and Simulation (MOSIM 2018), Jun 2018, Toulouse, France. pp.367-374. ⟨hal-01830739⟩

Oliver Polo Mejia, Marie-Christine Anselmet, Christian Artigues, Pierre Lopez. Multi-skill project scheduling in a nuclear research facility. 16th International Conference on Project Management and Scheduling , EURO Working Group on Project Management and Scheduling (WG-PMS), Apr 2018, Rome, Italy. pp.181-184. ⟨cea-01780570⟩

Azeddine Cheref, Christian Artigues, Emmanuel Hébrard, Pierre Lopez, Vincent Charvillat, et al.. Algorithme d’approximation pour un problème d’affectation d’une commande multiproduit multifournisseur. 12ème Conférence Internationale de MOdélisation, Optimisation et SIMulation (MOSIM 2018), Jun 2018, Toulouse, France. 7p. ⟨hal-01880425⟩

2017

Journal articles

Margaux Nattaf, Christian Artigues, Pierre Lopez. Cumulative scheduling with variable task profiles and concave piecewise linear processing rate functions. Constraints, 2017, 22 (4), pp.530-547. ⟨10.1007/s10601-017-9271-4⟩. ⟨hal-01546131⟩

Stéphane Caux, Yacine Gaoua, Pierre Lopez. A combinatorial optimisation approach to energy management strategy for a hybrid fuel cell vehicle. Energy, 2017, 133, pp.219-230. ⟨10.1016/j.energy.2017.05.109⟩. ⟨hal-01531987⟩

Tom Guérout, Yacine Gaoua, Christian Artigues, Georges da Costa, Pierre Lopez, et al.. Mixed integer linear programming for quality of service optimization in Clouds. Future Generation Computer Systems, 2017, 71, pp.1-17. ⟨10.1016/j.future.2016.12.034⟩. ⟨hal-01438550⟩

Conference papers

Oliver Polo Mejia, Marie-Christine Anselmet, Christian Artigues, Pierre Lopez. A new RCPSP variant for scheduling research activities in a nuclear laboratory. 47th International Conference on Computers & Industrial Engineering (CIE47), Oct 2017, Lisbonne, Portugal. 8p. ⟨hal-01630977⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez, Tamás Kis. Polyhedral results and valid inequalities for the Continuous Energy-Constrained Scheduling Problem. 13th Workshop on Models and Algorithms for Planning and Scheduling Problems (MSPSP 2017), Jun 2017, Seeon Abbey, Germany. ⟨hal-02136583⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez. Cumulative scheduling with variable task profiles and concave piecewise linear processing rate functions. 14th International Conference on Integration of Artificial Intelligence and Operation Research Techniques on Constraint Programming, Jun 2017, Padova, Italy. ⟨hal-02136666⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez, Tamás Kis. Renforcement des modèles à événements : application au CECSP et au RCPSP. 18ème congrès annuel de la Société française de recherche opérationnelle et d’aide à la décision (ROADEF 2017), Feb 2017, Metz, France. 4p. ⟨hal-02136610⟩

2016

Journal articles

Sandra Ulrich Ngueveu, Christian Artigues, Pierre Lopez. Scheduling under non-reversible energy sources. Discrete Applied Mathematics, 2016, 208, pp. 98-113. ⟨hal-01163925⟩

Mariem Trojet, Fehmi H'Mida, Pierre Lopez, Patrick Esquirol. Planification de chaîne logistique sous incertitude : maintien de solution par satisfaction de contraintes dynamiques. Journal Européen des Systèmes Automatisés (JESA), 2016, 49 (6), pp.725-748. ⟨10.3166/jesa.49.725-748⟩. ⟨hal-01398744⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez, David Rivreau. Energetic reasoning and mixed-integer linear programming for scheduling with a continuous resource and linear efficiency functions. OR Spectrum, 2016, 38 (2), pp. 459-492. ⟨10.1007/s00291-015-0423-x⟩. ⟨hal-01234466⟩

Book sections

Christian Artigues, Oumar Kone, Pierre Lopez, Marcel Mongeau. Mixed-integer linear programming formulations. Handbook on Project Management and Scheduling Volume 1, Chapter 2, Springer, pp.17-41, 2016, 978-3-319-05443-8. ⟨hal-01609695⟩

Conference papers

Margaux Nattaf, Christian Artigues, Pierre Lopez. An exact method for a continuous scheduling problem with concave efficiency functions. Gaspard Monge Program for Optimization and operations research, Nov 2016, Saclay, France. ⟨hal-02136590⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez, Tamás Kis. Polyhedral results and valid inequalities for resource-constrained scheduling problem event-based models. 29th Conference of the European Chapter on Combinatorial Optimization, May 2016, Budapest, Hungary. ⟨hal-02136596⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez. An exact method for the Continuous Energy-Constrained Scheduling Problem with concave piecewise linear functions. 15th International Conference on Project Management and Scheduling, Apr 2016, Valencia, Spain. pp.194-197. ⟨hal-01469192⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez, Tamás Kis. Inégalités valides pour les modèles à événements des problèmes d’ordonnancement sous contraintes de ressource. 17ème congrès annuel de la Société française de recherche opérationnelle et d’aide à la décision (ROADEF 2016), Feb 2016, Compiègne, France. 2p. ⟨hal-02136624⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez. Programmation linéaire mixte et programmation par contraintes pour un problème d'ordonnancement a contraintes énergétiques. 12e Journées Francophones de la Programmation par Contraintes (JFPC 2016), Jun 2016, Montpellier, France. pp.209-212. ⟨hal-01349321⟩

2015

Journal articles

Panwadee Tangpattanakul, Nicolas Jozefowiez, Pierre Lopez. A multi-objective local search heuristic for scheduling Earth observations taken by an agile satellite. European Journal of Operational Research, 2015, 245 (2), pp.542-554. ⟨10.1016/j.ejor.2015.03.011⟩. ⟨hal-01162839⟩

Gilles Simonin, Christian Artigues, Emmanuel Hébrard, Pierre Lopez. Scheduling scientific experiments for comet exploration. Constraints, 2015, 20 (1), pp.77 - 99. ⟨10.1007/s10601-014-9169-3⟩. ⟨hal-01108961⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez. A hybrid exact method for a scheduling problem with a continuous resource and energy constraints. Constraints, 2015, 20 (3), pp.304-324. ⟨10.1007/s10601-015-9192-z⟩. ⟨hal-01163561⟩

Conference papers

Margaux Nattaf, Christian Artigues, Pierre Lopez. Méthode exacte pour un problème d’ordonnancement continu avec contrainte énergétique. 16ème congrès annuel de la Société française de recherche opérationnelle et d’aide à la décision (ROADEF 2015), Feb 2015, Marseille, France. 2p. ⟨hal-02136634⟩

Koosha Khademi, Julien Cegarra, Pierre Lopez. Apports des verbalisations pour l’analyse de la gestion de l’incertitude des exploitants de transports. EPIQUE 2015, ARPEGE; Aix-Marseille Université, Jul 2015, Aix-en-Provence, France. ⟨hal-02502285⟩

L Berghman, Cyril Briand, R Leus, Pierre Lopez. The Truck Scheduling Problem at Crossdocking Terminals - Exclusive versus Mixed Mode. 4th International Conference on Operations Research and Enterprise Systems (ICORES 2015), Jan 2015, Lisbonne, Portugal. pp.247-253, ⟨10.5220/0005205102470253⟩. ⟨hal-01230870⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez, Rosa Medina, Lorena Pradenas, et al.. A batch sizing and scheduling problem on parallel machines with different speeds, maintenance operations, setup times and energy costs. International Conference on Industrial Engineering and Systems Management (IESM 2015), Oct 2015, Seville, Spain. 17p. ⟨hal-01166498⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez. A hybrid exact method for a scheduling problem with a continuous resource and energy constraints. 12th International Conference on Integration of Artificial Intelligence and Operation Research Techniques on Constraint Programming, May 2015, Barcelona, Spain. ⟨hal-02136670⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez. Flow and energy based satisfiability tests for the Continuous Energy-Constrained Scheduling Problem with concave piecewise linear functions. Doctoral Program, 21th International Conference on Principles and Practice of Constraint Programming , Aug 2015, Cork, Ireland. pp 70-81. ⟨hal-01288033⟩

Tamara Borreguero Sanchidrián, Christian Artigues, Alvaro García Sánchez, Miguel Ortega Mier, Pierre Lopez. Multimode Time-Constrained Scheduling Problems with Generalized Temporal Constraints and Labor Skills. 7th Multidisciplinary International Scheduling Conference: Theory and Applications (MISTA 2015), Aug 2015, Prague, Czech Republic. pp.809-813. ⟨hal-01232879⟩

2014

Journal articles

Christian Artigues, Pierre Lopez. Energetic reasoning for energy-constrained scheduling with a continuous resource. Journal of Scheduling, 2014, 36 p. ⟨10.1007/s10951-014-0404-y⟩. ⟨hal-01108964⟩

Conference papers

Yacine Gaoua, Stéphane Caux, Pierre Lopez. Combinatorial optimization to energy management of an electric vehicle. IFORS’14 20th Conference of the International Federation of Operational Research Societies, 13-18 July 2014, Barcelona (SPAIN), 2014, Barcelona, Spain. ⟨hal-03886479⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez. Condition nécessaire utilisant le raisonnement énergétique pour un problème d'ordonnancement à contraintes énergétiques. ROADEF - 15ème congrès annuel de la Société française de recherche opérationnelle et d'aide à la décision, Société française de recherche opérationnelle et d'aide à la décision, Feb 2014, Bordeaux, France. ⟨hal-00946396⟩

Yacine Gaoua, Stéphane Caux, Pierre Lopez. Gestion d'énergie en temps réel d'un véhicule hybride électrique. ROADEF - 15ème congrès annuel de la Société française de recherche opérationnelle et d'aide à la décision, Société française de recherche opérationnelle et d'aide à la décision, Feb 2014, Bordeaux, France. ⟨hal-00946485⟩

Margaux Nattaf, Christian Artigues, Pierre Lopez. A polynomial satisfiability test using energetic reasoning for energy-constraint scheduling. International Conference on Project Management and Scheduling (PMS 2014), Mar 2014, Munich, Germany. pp.169-172. ⟨hal-00978706⟩

Yacine Gaoua, Stéphane Caux, Pierre Lopez, C Raga, A Barrado, et al.. Hybrid systems energy management using optimization method based on dynamic sources models. IEEE Vehicle Power and Propulsion Conference (VPPC 2014), Oct 2014, Coimbra, Portugal. 9p. ⟨hal-01104099⟩

Sandra Ulrich Ngueveu, Christian Artigues, Pierre Lopez. Scheduling under multiple energy resources. Gaspard Monge Program for Optimization Conference on Optimization & Practices in Industrie (PGMO-COPI’14), Oct 2014, Paris-Saclay, France. 3p. ⟨hal-01875783⟩

Mariem Trojet, Fehmi H'Mida, Pierre Lopez, Patrick Esquirol. Planification de chaîne logistique sous incertitude : maintien de solution par satisfaction de contraintes dynamique. International Conference on Modeling, Optimization & Simulation ( MOSIM ), Nov 2014, Nancy, France. 10p. ⟨hal-01064219⟩

Autres documents

Sandra Ulrich Ngueveu, Christian Artigues, Pierre Lopez. Combinatorial optimization with multiple resources and energy constraints. Gaspard Monge Program for Optimization - Conference on Optimization & Practices in Industry : PGMO-COPI’14, Oct 2014, Paris, France. , 2015. ⟨hal-01163069⟩