STOGO 2025 Stockholm
Hexaly is delighted to sponsor STOGO 2025, the 16th Global Optimization Workshop. The event will occur on September 2 – 5, 2025, at the meeting center Piperska Muren in Stockholm city center. The STOGO 2025 conference program can be accessed here.
Come by the Hexaly booth at STOGO 2025 to meet Julien Darlay, Co-Founder & Head of Science at Hexaly, and discover the new release Hexaly 14.0 and its dramatic performance improvements for solving Routing, Scheduling, Packing, and many other problems in Supply Chain and Workforce Optimization. This is also the opportunity to explore and discuss our numerous job offers. Below are the abstracts of Julien’s talks at the 2025 STOGO Conference:
Computing global optimum in Hexaly, Julien Darlay, Co-Founder & Head of Science, Hexaly
Wednesday, September 03, 1:15 PM – 2:45 PM
Hexaly is a model-and-run solver that combines heuristics with exact methods. In addition to supporting the classical MINLP formalism, it introduces a set-based modeling approach that simplifies the formulation of some combinatorial problems, such as vehicle routing, production scheduling and packing. For problems involving scalar operators only, Hexaly’s exact solver employs a nonlinear branch-and-bound algorithm. For set-based models, automatic reformulations are applied to derive either compact models that can be solved with standard branch & bound or extended formulations, which are then solved using branch price and cut or column elimination techniques. This talk will present the key techniques used by Hexaly to compute optimal solutions to nonlinear problems.
We look forward to connecting with the operations research community at STOGO 2025 in Stockholm.
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