no. 2
A branch-and-cut for the Non-Disjoint m-Ring-Star Problem
RAIRO - Operations Research - Recherche Opérationnelle, Tome 48 (2014) no. 2, pp. 167-188.

In this article we study the realistic network topology of Synchronous Digital Hierarchy (SDH) networks. We describe how providers fulfill customer connectivity requirements. We show that SDH Network design reduces to the Non-Disjoint m-Ring-Star Problem (NDRSP). We first show that there is no two-index integer formulation for this problem. We then present a natural 3-index formulation for the NDRSP together with some classes of valid inequalities that are used as cutting planes in a Branch-and-Cut approach. We propose a polyhedral study of a polytope associated with this formulation. Finally, we present our Branch-and-Cut algorithm and give some experimental results on both random and real instances.

DOI : 10.1051/ro/2014006
Classification : 90B10, 90C10, 90C57, 90C90
Mots clés : realistic SDH network, non-disjointm-ring-star problem, polyhedral approach, branch-and-cut algorithm 
@article{RO_2014__48_2_167_0,
     author = {Fouilhoux, Pierre and Questel, Aur\'elien},
     title = {A branch-and-cut for the {Non-Disjoint} $m${-Ring-Star} {Problem}},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {167--188},
     publisher = {EDP-Sciences},
     volume = {48},
     number = {2},
     year = {2014},
     doi = {10.1051/ro/2014006},
     zbl = {1292.90069},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ro/2014006/}
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Fouilhoux, Pierre; Questel, Aurélien. A branch-and-cut for the Non-Disjoint $m$-Ring-Star Problem. RAIRO - Operations Research - Recherche Opérationnelle, Tome 48 (2014) no. 2, pp. 167-188. doi : 10.1051/ro/2014006. http://www.numdam.org/articles/10.1051/ro/2014006/

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