Total Dual Integrality in Some Facility Location Problems
Total Dual Integrality in Some Facility Location Problems
复制标题
一些设施选址问题的完全对偶完整性
DOI:
10.1137/090768400
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发表时间:
2012-07
影响因子:
0.8
通讯作者:
Wenan Zang
中科院分区:
文献类型:
--
作者:
Xujin CHEN;陈智斌;Wenan Zang
Facility location, arising in a rich variety of applications, has been studied extensively in the fields of operations research and computer science. In this paper we consider the classical uncapacitated facility location problem and its "prize-collecting" variant introduced by Ba¨ iou and Barahona, and we show that the linear systems associated with these problems are totally dual integral if and only if the input graphs do not contain a certain type of odd cycles. As corollaries, we get structural characterizations of two min-max relations on facility location. Our results strengthen the integrality theorems on facility location polytopes proved by Ba¨ iou and Barahona; our proofs lead to combinatorial polynomial-time algorithms for the facility location problems that we consider.
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DOI:
10.1007/978-0-387-30162-4_28
发表时间:
2021-08
期刊:
Proceedings of the 1997 International Symposium on Parallel Architectures, Algorithms and Networks (I-SPAN'97)
影响因子:
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作者:
通讯作者:
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影响因子:
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DOI:
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发表时间:
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期刊:
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影响因子:
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影响因子:
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DOI:
10.1145/375827.375845
发表时间:
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期刊:
J. ACM
影响因子:
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