Author

Gioni Mexi

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Preprint Sep 2026

Race, Exchange, Improve: Finding high-quality MIP solutions quickly

Mixed-integer programming (MIP) is a cornerstone in applied optimization, both in industry and academia. Recently, there has been increased attention to finding strong primal solutions quickly. This is reflected, for example, in the development of the NVIDIA cuOpt solver and, most recently, in the new MIPFEAS benchmark...

Gioni Mexi, D. Rehfeldt · 1 citation

Jul 2026

A Numerically-safe Branch-Price-and-Cut Algorithm for the Length-Constrained Cycle Partition Problem

This work formulate LCCP as a set partitioning model and solves it using an exact branch-price-and-cut approach, able to solve previously solved instances in a fraction of the time and closes 14 previously unsolved instances with numerically safe bounds.

Mohammed Ghannam, Ambros M. Gleixner, Gioni Mexi et al. · arXiv.org · 0 citations