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math.OC2024
A diving heuristic for mixed-integer problems with unbounded semi-continuous variables
Katrin Halbig, Alexander Hoen, Ambros Gleixner +2
Semi-continuous decision variables arise naturally in many real-world applications. They are defined to take either value zero or any value within a specified range, and occur main…
math.OC2024
Branch and Cut for Partitioning a Graph into a Cycle of Clusters
Leon Eifler, Jakob Witzig, Ambros Gleixner
In this paper we study formulations and algorithms for the cycle clustering problem, a partitioning problem over the vertex set of a directed graph with nonnegative arc weights tha…