A Branch-and-Price Algorithm for the Ring-Tree Facility Location Problem

Q3 Computer Science

Electronic Notes in Theoretical Computer Science Pub Date : 2019-08-30 DOI:10.1016/j.entcs.2019.08.002

Fabio H.N. Abe , Edna A. Hoshino , Alessandro Hill , Roberto Baldacci

引用次数: 1

Abstract

The ring-tree facility location problem is a generalization of the capacitated ring-tree problem in which additional cost and capacity related to facilities are considered. Applications of this problem arise in the strategic design of bi-level telecommunication networks. We investigate an extended integer programming formulation for the problem and different approaches to deal with the NP-hardness of the pricing problem that appears in a branch-and-price algorithm to solve it. Computational experiments show how heuristics and relaxations improved the performance of a branch-and-price algorithm.

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环树设施选址问题的分支-价格算法

环树设施选址问题是对可容环树问题的推广，其中考虑了与设施相关的额外成本和容量。这一问题在双级电信网的战略设计中得到了应用。我们研究了该问题的扩展整数规划公式和不同的方法来处理定价问题的np -硬度，该问题出现在求解该问题的分支定价算法中。计算实验显示了启发式和松弛法如何提高分支价格算法的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Electronic Notes in Theoretical Computer Science Computer Science-Computer Science (all)

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