Research Interests: Operations Research, Management Science, Large-Scale Optimization, Machine Learning for Operations Research, Optimization Proxies, Metaheuristics, Algorithm Configuration, Solvers

Publications

Published & Under Review

1. OCP Optimizes its Supply Chain for Africa

Authors: Er Raqabi El Mehdi, Beljadid Ahmed, Bennouna Mohammed Ali, Bennouna Rania, Boussaadi Latifa, El Hachemi Nizar, El Hallaoui Issmail, Fender Michel, Jamali Mohamed Anouar, Si Hammou Nabil and Soumis François
Deployed by our industry collaborator OCP Group, estimated impact of 5% in incremental turnover annually
Winner at the EURO Excellence in Practice Award 2024
Finalist at the IFORS Prize for OR in Development 2023
Published in INFORMS Journal on Applied Analytics, 2025

2. A Decomposition Matheuristic for the Transient Stability Constrained Unit Commitment at Hydro-Quebec

Authors: Er Raqabi El Mehdi, Bani Abderrahman, Morabit Mouad, Blondin Alexandre, Besner Alexandre, Fournier Julien and El Hallaoui Issmaïl
Published in IEEE Transactions on Power Systems, 2025

3. Primal Methods For Very Large-scale Optimization

Authors: Er Raqabi El Mehdi
Ph.D. Thesis, Polytechnique Montreal, 2024

4. Towards Resilience: Primal Large-scale Re-optimization

Authors: Er Raqabi El Mehdi, Wu Yong, El Hallaoui Issmaïl and Soumis François
Part of the Project “OCP Optimizes its Supply Chain for Africa”
Published in Transportation Research Part E: Logistics and Transportation Review, 2024

5. Incremental LNS Framework for Integrated Production, Inventory, and Vessel Scheduling: Application to a Global Supply Chain

Authors: Er Raqabi El Mehdi, Himmich Ilyas, El Hachemi Nizar, El Hallaoui Issmaïl and Soumis François
Deployed by our industry collaborator OCP Group, estimated impact of 5% in incremental turnover annually
Part of the Project “OCP Optimizes its Supply Chain for Africa”
Published in Omega, 2023

6. MPILS: An Automatic Tuner for MILP Solvers

Authors: Himmich Ilyas∗, Er Raqabi El Mehdi∗, El Hachemi Nizar, El Hallaoui Issmaïl, Metrane Abdelmoutalib and Soumis François
Deployed by our industry collaborator OCP Group, estimated impact of 5% in incremental turnover annually
Part of the Project “OCP Optimizes its Supply Chain for Africa”
Published in Computers & Operations Research, 2023

7. An Electric Vehicle Transitioning Framework for Public Fleet Planning

Authors: Er Raqabi El Mehdi and Li Wenkai
Published in Transportation Research Part D: Transport and Environment, 2023

8. ID-PAS+: Identity-Aware Predict-and-Search for Solving General Mixed-Integer Linear Programs

Authors: Cai Junyang, Er Raqabi El Mehdi, Van Hentenryck Pascal and Dilkina Bistra
Published in The 19th International Symposium on Combinatorial Search

9. The Primal Benders Decomposition