Presolve Reductions in Mixed Integer Programming

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Achterberg T, Bixby RE, Gu Z, Rothberg E, Weninger D
Zeitschrift: Informs Journal on Computing
Jahr der Veröffentlichung: 2019
ISSN: 1091-9856
Sprache: Englisch


Abstract

Mixed integer programming has become a very powerful tool for modeling and solving real-world planning and scheduling problems, with the breadth of applications appearing to be almost unlimited. A critical component in the solution of these mixed-integer programs is a set of routines commonly referred to as presolve. Presolve can be viewed as a collection of preprocessing techniques that reduce the size of and, more importantly, improve the “strength” of the given model formulation, that is, the degree to which the constraints of the formulation accurately describe the underlying polyhedron of integer-feasible solutions. As our computational results will show, presolve is a key factor in the speed with which we can solve mixed-integer programs, and is often the difference between a model being intractable and solvable, in some cases easily solvable. In this paper we describe the presolve functionality in the Gurobi commercial mixed-integer programming code. This includes an overview, or taxonomy of the different methods that are employed, as well as more-detailed descriptions of several of the techniques, with some of them appearing, to our knowledge, for the first time in the literature.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Weninger, Dieter Dr.
Lehrstuhl für Angewandte Mathematik (Gemischt-ganzzahlige lineare und nichtlineare Optimierung)


Zitierweisen

APA:
Achterberg, T., Bixby, R.E., Gu, Z., Rothberg, E., & Weninger, D. (2019). Presolve Reductions in Mixed Integer Programming. Informs Journal on Computing.

MLA:
Achterberg, Tobias, et al. "Presolve Reductions in Mixed Integer Programming." Informs Journal on Computing (2019).

BibTeX: 

Zuletzt aktualisiert 2019-14-08 um 16:53