Column generation is a widely used dual-guided approach to solve highly degenerate problems. During the resolution, the degeneracy of the master problem ofte...

Log transportation accounts for up to 40% of operating costs in the Canadian forestry sector Audy et al. (2023), yet optimization tools for transportatio...

We study methods for approximating road-network distances on dense urban maps, with a focus on downstream optimization tasks such as route planning. In many ...

Heavy-duty vehicles (HDVs) are a major source of road transportation emissions, yet their electrification remains challenging due to operational constraints....

Le théorème de convergence des presque surmartingales de Robbins et Siegmund (1971) constitue un résultat fondamental pour l’analyse de convergence de nombre...

As fast-charging demand grows, ensuring the operational resilience of electric vehicle (EV) infrastructure under congestion becomes a key challenge in large-...

Integer (linear) programs are a standard way of formalizing a vast array of optimization problems in industry, services, management, science, and technology....

This paper investigates the Collaborative Routing Orchestration for Organic Food Distribution Problem (CRO-FDP), a two-echelon collaborative distribution n...

Le CRM, IVADO et le GERAD organisèrent conjointement le Quinzième atelier de résolution de problèmes industriels de Montréal, qui eut lieu du 2 au 6 juin 202...

In this paper, we study the pickup and delivery problem with time windows, multiple compartments, incompatibility constraints and cleaning operations (PDPTWM...

Nous examinons les décisions d'investissement et de tarification en matière de réduction des émissions au sein d'une chaîne d'approvisionnement où les consom...

We study the integration of multi-period assignment, routing, and scheduling of care workers for home health care services. In such a context, it is importa...

Many combinatorial optimization problems, such as vehicle and crew scheduling, can be modeled using path-flow formulations, where each variable represents a ...

Cet article présente une nouvelle variante du problème de production et de distribution intégré dans une chaîne d'approvisionnement à deux niveaux impliquant...

Rolling stock scheduling and crew scheduling are two fundamental problems that arise in the planning of urban rail operations and that are especially importa...

A shift toward shopping at (autonomous) wheeled vending stores is redefining urban retail. Compared with traditional brick-and-mortar stores, such mobile sto...

This study investigates multi-store order delivery services where customers can order from multiple stores for home delivery. We first consider separated-ord...

Ultra-fast delivery revolutionizes food and grocery services, with several companies advertising delivery times under 15 to 30 minutes. Motivated by the mult...

For continuing tasks, average cost Markov decision processes have well- documented value and can be solved using efficient algorithms. However, it explici...

Researchers around the globe attend the International Symposium on Mathematical Programming (ISMP) to share their latest results in mathematics, algorithms, ...