OCP Optimizes Its Supply Chain for Africa.

Issmail Elhallaoui Issmail El Hallaoui

El Mehdi Er Raqabi Ahmed Beljadid Mohammed Ali Bennouna Rania Bennouna Latifa Boussaadi Nizar El Hachemi Issmail El Hallaoui Michel Fender Mohamed Anouar Jamali Nabil Si Hammou François Soumis OCP Optimizes Its Supply Chain for Africa. 437-456 2025 55 INFORMS J. Appl. Anal. 6 https://doi.org/10.1287/inte.2023.0073 db/journals/interfaces/interfaces55.html#RaqabiBBBBHHFJHS25 streams/journals/interfaces

Mohamad Aziz Hanane Dagdougui Issmail El Hallaoui Game Theoretical Formulation for Residential Community Microgrid via Mean Field Theory: Proof of Concept. 25-30 2024 8 IEEE Control. Syst. Lett. https://doi.org/10.1109/LCSYS.2023.3345368 db/journals/csysl/csysl8.html#AzizDH24

Ilyas Himmich Issmail El Hallaoui François Soumis A multiphase dynamic programming algorithm for the shortest path problem with resource constraints. 470-483 2024 315 Eur. J. Oper. Res. 2 https://doi.org/10.1016/j.ejor.2023.11.047 db/journals/eor/eor315.html#HimmichHS24 streams/journals/eor

Bilal Ahmad Rather Mustapha Aouchiche Muhammad Imran Issmail El Hallaoui On distance Laplacian spectral ordering of some graphs. 867-892 2024 February 70 J. Appl. Math. Comput. 1 https://doi.org/10.1007/s12190-024-01995-8 https://www.wikidata.org/entity/Q129303812 db/journals/jamc/jamc70.html#RatherAIH24

Rachid Hassani Guy Desaulniers Issmail Elhallaoui A parallel ruin and recreate heuristic for personnel scheduling in a flexible working environment. 165-182 2024 April 27 J. Sched. 2 https://doi.org/10.1007/s10951-023-00794-6 db/journals/scheduling/scheduling27.html#HassaniDE24

Elahe Amiri Antoine Legrain Issmail El Hallaoui Online Optimization of a Dial-a-Ride Problem with the Integral Primal Simplex. 1-16 2024 CPAIOR (1) https://doi.org/10.1007/978-3-031-60597-0_1 conf/cpaior/2024-1 db/conf/cpaior/cpaior2024-1.html#AmiriLH24

Abdelhakim Abdellaoui Loubna Benabbou Issmail El Hallaoui Towards a connection between the capacitated vehicle routing problem and the constrained centroid-based clustering. 2024 abs/2403.14013 CoRR https://doi.org/10.48550/arXiv.2403.14013 db/journals/corr/corr2403.html#abs-2403-14013

Ilyas Himmich El Mehdi Er Raqabi Nizar El Hachemi Issmail El Hallaoui Abdelmoutalib Metrane François Soumis MPILS: An Automatic Tuner for MILP Solvers. 106344 2023 November 159 Comput. Oper. Res. https://doi.org/10.1016/j.cor.2023.106344 db/journals/cor/cor159.html#HimmichRHHMS23

Abderrahman Bani Issmail El Hallaoui Ayoub Insa Corréa Adil Tahir Solving a real-world multi-depot multi-period petrol replenishment problem with complex loading constraints. 154-172 2023 November 311 Eur. J. Oper. Res. 1 https://doi.org/10.1016/j.ejor.2023.04.016 db/journals/eor/eor311.html#BaniHCT23

Mohamad Aziz Hanane Dagdougui Issmail Elhallaoui A Decentralized Game Theoretic Approach for Virtual Storage System Aggregation in a Residential Community. 34846-34857 2022 10 IEEE Access https://doi.org/10.1109/ACCESS.2022.3162143 db/journals/access/access10.html#AzizDE22

Mustapha Aouchiche Issmail El Hallaoui Minimum values of the second largest Q-eigenvalue. 46-51 2022 306 Discret. Appl. Math. https://doi.org/10.1016/j.dam.2021.09.019 db/journals/dam/dam306.html#AouchicheH22

Adil Tahir Guy Desaulniers Issmail El Hallaoui Integral Column Generation for Set Partitioning Problems with Side Constraints. 2313-2331 2022 34 INFORMS J. Comput. 4 https://doi.org/10.1287/ijoc.2022.1174 https://www.wikidata.org/entity/Q114058183 db/journals/informs/informs34.html#TahirDH22

Omar Foutlane Issmail El Hallaoui Pierre Hansen Distributed Integral Column Generation for Set Partitioning Problems. 2022 3 Oper. Res. Forum 2 https://doi.org/10.1007/s43069-022-00136-w db/journals/orf/orf3.html#FoutlaneHH22

Rachid Hassani Guy Desaulniers Issmail Elhallaoui Real-time bi-objective personnel re-scheduling in the retail industry. 93-108 2021 293 Eur. J. Oper. Res. 1 https://doi.org/10.1016/j.ejor.2020.12.013 db/journals/eor/eor293.html#HassaniDE21

Safae Er-Rbib Guy Desaulniers Issmail El Hallaoui Abderrahman Bani Integrated and sequential solution methods for the cyclic bus driver rostering problem. 764-779 2021 72 J. Oper. Res. Soc. 4 https://doi.org/10.1080/01605682.2019.1700187 db/journals/jors/jors72.html#Er-RbibDHB21

Safae Er-Rbib Guy Desaulniers Issmail Elhallaoui Patrick Munroe Preference-based and cyclic bus driver rostering problem with fixed days off. 251-286 2021 13 Public Transp. 2 https://doi.org/10.1007/s12469-021-00268-y db/journals/pubtrans/pubtrans13.html#Er-RbibDEM21

Adil Tahir Frédéric Quesnel Guy Desaulniers Issmail El Hallaoui Yassine Yaakoubi An Improved Integral Column Generation Algorithm Using Machine Learning for Aircrew Pairing. 1411-1429 2021 55 Transp. Sci. 6 https://doi.org/10.1287/trsc.2021.1084 db/journals/transci/transci55.html#TahirQDHY21

Abdelouahab Zaghrouti Issmail El Hallaoui François Soumis Improving set partitioning problem solutions by zooming around an improving direction. 645-671 2020 284 Ann. Oper. Res. 2 https://doi.org/10.1007/s10479-018-2868-1 db/journals/anor/anor284.html#ZaghroutiHS20

Rachid Hassani Guy Desaulniers Issmail Elhallaoui Real-time personnel re-scheduling after a minor disruption in the retail industry. 104952 2020 120 Comput. Oper. Res. https://doi.org/10.1016/j.cor.2020.104952 db/journals/cor/cor120.html#HassaniDE20

Ilyas Himmich Issmail El Hallaoui François Soumis Primal column generation framework for vehicle and crew scheduling problems. 291-309 2020 75 Networks 3 https://doi.org/10.1002/net.21925 db/journals/networks/networks75.html#HimmichHS20

Slim Belhaiza Uthman Baroudi Issmail Elhallaoui A Game Theoretic Model for the Multiperiodic Smart Grid Demand Response Problem. 1147-1158 2020 14 IEEE Syst. J. 1 https://doi.org/10.1109/JSYST.2019.2918172 https://www.wikidata.org/entity/Q127714232 db/journals/sj/sj14.html#BelhaizaBE20

Ilyas Himmich Hatem Ben Amor Issmail El Hallaoui François Soumis A Primal Adjacency-Based Algorithm for the Shortest Path Problem with Resource Constraints. 1153-1169 2020 54 Transp. Sci. 5 https://doi.org/10.1287/trsc.2019.0941 db/journals/transci/transci54.html#HimmichAHS20

Mayssoun Messaoudi Issmail El Hallaoui Louis-Martin Rousseau Adil Tahir Solving a Real-World Multi-attribute VRP Using a Primal-Based Approach. 286-296 2020 ISCO https://doi.org/10.1007/978-3-030-53262-8_24 conf/iscopt/2020 db/conf/iscopt/isco2020.html#MessaoudiHRT20 Soumya Suvra Ghosal Indranil Sarkar Issmail El Hallaoui Lung Nodule Classification Using Convolutional Autoencoder and Clustering Augmented Learning Method(CALM). 19-26 2020 HSDM@WSDM https://ceur-ws.org/Vol-2551/paper-05.pdf conf/wsdm/2020hsdm db/conf/wsdm/hsdm2020.html#GhosalSH20

Omar Foutlane Issmail El Hallaoui Pierre Hansen Integral simplex using double decomposition for set partitioning problems. 243-257 2019 111 Comput. Oper. Res. https://doi.org/10.1016/j.cor.2019.06.016 https://www.wikidata.org/entity/Q127597817 db/journals/cor/cor111.html#FoutlaneHH19

Adil Tahir Guy Desaulniers Issmail El Hallaoui Integral column generation for the set partitioning problem. 713-744 2019 8 EURO J. Transp. Logist. 5 https://doi.org/10.1007/s13676-019-00145-6 db/journals/ejtl/ejtl8.html#TahirDH19

Soumya Suvra Ghosal Abderrahman Bani Amine Amrouss Issmail El Hallaoui A Deep Learning Approach to Predict Parking Occupancy using Cluster Augmented Learning Method. 581-586 2019 ICDM Workshops https://doi.org/10.1109/ICDMW.2019.00088 conf/icdm/2019w db/conf/icdm/icdm2019w.html#GhosalBAH19

Abdelouahab Zaghrouti Issmail El Hallaoui François Soumis Improved integral simplex using decomposition for the set partitioning problem. 185-206 2018 6 EURO J. Comput. Optim. 2 https://doi.org/10.1007/s13675-018-0098-6 https://www.wikidata.org/entity/Q129890175 db/journals/ejco/ejco6.html#ZaghroutiHS18

Nizar El Hachemi Mohammed Saddoune Issmail El Hallaoui Louis-Martin Rousseau A two-phase approach to solve the synchronized bin-forklift scheduling problem. 651-657 2018 29 J. Intell. Manuf. 3 https://doi.org/10.1007/s10845-015-1086-9 db/journals/jim/jim29.html#HachemiSHR18

Samuel Rosat Issmail Elhallaoui François Soumis Driss Chakour Influence of the normalization constraint on the integral simplex using decomposition. 53-70 2017 217 Discret. Appl. Math. https://doi.org/10.1016/j.dam.2015.12.015 db/journals/dam/dam217.html#RosatESC17

Hocine Bouarab Issmail El Hallaoui Abdelmoutalib Metrane François Soumis Dynamic constraint and variable aggregation in column generation. 835-850 2017 262 Eur. J. Oper. Res. 3 https://doi.org/10.1016/j.ejor.2017.04.049 db/journals/eor/eor262.html#BouarabHMS17

Samuel Rosat Frédéric Quesnel Issmail Elhallaoui François Soumis Dynamic penalization of fractional directions in the integral simplex using decomposition: Application to aircrew scheduling. 1007-1018 2017 263 Eur. J. Oper. Res. 3 https://doi.org/10.1016/j.ejor.2017.05.047 db/journals/eor/eor263.html#RosatQES17

Samuel Rosat Issmail Elhallaoui François Soumis Andrea Lodi 0001 Integral simplex using decomposition with primal cutting planes. 327-367 2017 166 Math. Program. 1-2 https://doi.org/10.1007/s10107-017-1123-x db/journals/mp/mp166.html#RosatESL17

Nizar El Hachemi Issmail El Hallaoui Michel Gendreau Louis-Martin Rousseau Flow-based integer linear programs to solve the weekly log-truck scheduling problem. 87-97 2015 232 Ann. Oper. Res. 1 https://doi.org/10.1007/s10479-014-1527-4 db/journals/anor/anor232.html#HachemiHGR15

Abdelouahab Zaghrouti François Soumis Issmail El Hallaoui Integral Simplex Using Decomposition for the Set Partitioning Problem. 435-449 2014 62 Oper. Res. 2 https://doi.org/10.1287/opre.2013.1247 db/journals/ior/ior62.html#ZaghroutiSH14

Mohamed Ouzineb Fatima Zahra Mhada Robert Pellerin Issmail El Hallaoui A Hybrid Method for Solving Buffer Sizing and Inspection Stations Allocation. 156-166 2014 APMS (3) https://doi.org/10.1007/978-3-662-44733-8_20 conf/ifip5-7/2014apms3 db/conf/ifip5-7/apms2014-3.html#OuzinebMPH14 Samuel Rosat Issmail Elhallaoui François Soumis Andrea Lodi 0001 Integral Simplex Using Decomposition with Primal Cuts. 22-33 2014 SEA https://doi.org/10.1007/978-3-319-07959-2_3 conf/wea/2014 db/conf/wea/sea2014.html#RosatESL14

Mohamed Ouzineb Fatima Zahra Mhada Issmail El Hallaoui Buffer dimensioning and control stations positioning with a space partitioning-tabu search approach. 15-22 2013 51 INFOR Inf. Syst. Oper. Res. 1 https://doi.org/10.3138/infor.51.1.15 db/journals/infor/infor51.html#OuzinebMH13

Mohammed Saddoune Guy Desaulniers Issmail Elhallaoui François Soumis Integrated Airline Crew Pairing and Crew Assignment by Dynamic Constraint Aggregation. 39-55 2012 46 Transp. Sci. 1 https://doi.org/10.1287/trsc.1110.0379 db/journals/transci/transci46.html#SaddouneDES12

Mohammed Saddoune Guy Desaulniers Issmail Elhallaoui François Soumis Integrated airline crew scheduling: A bi-dynamic constraint aggregation method using neighborhoods. 445-454 2011 212 Eur. J. Oper. Res. 3 https://doi.org/10.1016/j.ejor.2011.02.009 db/journals/eor/eor212.html#SaddouneDES11

Issmail Elhallaoui Abdelmoutalib Metrane Guy Desaulniers François Soumis An Improved Primal Simplex Algorithm for Degenerate Linear Programs. 569-577 2011 23 INFORMS J. Comput. 4 https://doi.org/10.1287/ijoc.1100.0425 db/journals/informs/informs23.html#ElhallaouiMDS11

Abdelmoutalib Metrane François Soumis Issmail Elhallaoui Column generation decomposition with the degenerate constraints in the subproblem. 37-44 2010 207 Eur. J. Oper. Res. 1 https://doi.org/10.1016/j.ejor.2010.05.002 db/journals/eor/eor207.html#MetraneSE10

Issmail Elhallaoui Abdelmoutalib Metrane François Soumis Guy Desaulniers Multi-phase dynamic constraint aggregation for set partitioning type problems. 345-370 2010 123 Math. Program. 2 https://doi.org/10.1007/s10107-008-0254-5 db/journals/mp/mp123.html#ElhallaouiMSD10

Issmail Elhallaoui Guy Desaulniers Abdelmoutalib Metrane François Soumis Bi-dynamic constraint aggregation and subproblem reduction. 1713-1724 2008 35 Comput. Oper. Res. 5 https://doi.org/10.1016/j.cor.2006.10.007 db/journals/cor/cor35.html#ElhallaouiDMS08

Issmail Elhallaoui Daniel Villeneuve François Soumis Guy Desaulniers Dynamic Aggregation of Set-Partitioning Constraints in Column Generation. 632-645 2005 53 Oper. Res. 4 https://doi.org/10.1287/opre.1050.0222 db/journals/ior/ior53.html#ElhallaouiVSD05

Abdelhakim Abdellaoui Elahe Amiri Hatem Ben Amor Amine Amrouss Mustapha Aouchiche Mohamad Aziz Abderrahman Bani Uthman A. BaroudiUthman Baroudi Slim Belhaiza Ahmed Beljadid Loubna Benabbou Mohammed Ali Bennouna Rania Bennouna Hocine Bouarab Latifa Boussaadi Driss Chakour Ayoub Insa Corréa Hanane Dagdougui Guy Desaulniers Safae Er-Rbib Michel Fender Omar Foutlane Michel Gendreau Soumya Suvra Ghosal Nizar El Hachemi Nabil Si Hammou Pierre Hansen Rachid Hassani Ilyas Himmich Muhammad Imran Mohamed Anouar Jamali Antoine Legrain Andrea Lodi 0001 Mayssoun Messaoudi Abdelmoutalib Metrane Fatima Zahra Mhada Patrick Munroe Mohamed Ouzineb Robert Pellerin Frédéric Quesnel El Mehdi Er Raqabi Bilal A. RatherBilal Ahmad Rather Samuel Rosat Louis-Martin Rousseau Mohammed Saddoune Indranil Sarkar François Soumis Adil Tahir Daniel Villeneuve Yassine Yaakoubi Abdelouahab Zaghrouti