Minimum spanning tree with conflicting edge pairs: a branch-and-cut approach

In this paper, we show a branch-and-cut approach to solve the minimum spanning tree problem with conflicting edge pairs. This is a NP-hard variant of the classical minimum spanning tree problem, in which there are mutually exclusive edges. We introduce a new set of valid inequalities for the problem...

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Bibliographic Details
Published in:Annals of operations research Vol. 298; no. 1-2; pp. 65 - 78
Main Authors: Carrabs, Francesco, Cerulli, Raffaele, Pentangelo, Rosa, Raiconi, Andrea
Format: Journal Article
Language:English
Published: New York Springer US 01.03.2021
Springer
Springer Nature B.V
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ISSN:0254-5330, 1572-9338
Online Access:Get full text
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Summary:In this paper, we show a branch-and-cut approach to solve the minimum spanning tree problem with conflicting edge pairs. This is a NP-hard variant of the classical minimum spanning tree problem, in which there are mutually exclusive edges. We introduce a new set of valid inequalities for the problem, based on the properties of its feasible solutions, and we develop a branch-and-cut algorithm based on them. Computational tests are performed both on benchmark instances coming from the literature and on some newly proposed ones. Results show that our approach outperforms a previous branch-and-cut algorithm proposed for the same problem.
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content type line 14
ISSN:0254-5330
1572-9338
DOI:10.1007/s10479-018-2895-y