Minimum Spanning Tree under Explorable Uncertainty in Theory and Experiments
Minimum Spanning Tree under Explorable Uncertainty in Theory and Experiments
复制标题
可探索不确定性下的最小生成树的理论与实验
DOI:
10.1145/3422371
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发表时间:
--
期刊:
影响因子:
--
通讯作者:
J. Meißner
中科院分区:
文献类型:
--
作者:
J. Focke;N. Megow;J. Meißner
We consider the minimum spanning tree (MST) problem in an uncertainty model where interval edge weights can be explored to obtain the exact weight. The task is to find an MST by querying the minimum number of edges. This problem has received quite some attention from the algorithms theory community. In this article, we conduct the first practical experiments for MST under uncertainty, theoretically compare three known algorithms, and compare theoretical with practical behavior of the algorithms. Among others, we observe that the average performance and the absolute number of queries are both far from the theoretical worst-case bounds. Furthermore, we investigate a known general preprocessing procedure and develop an implementation thereof that maximally reduces the data uncertainty. We also characterize a class of instances that is solved to optimality by our preprocessing. Our experiments are based on practical data from an application in telecommunications and uncertainty instances generated from the standard TSPLib graph library.
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DOI:
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发表时间:
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期刊:
J. Algorithms
影响因子:
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作者:
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DOI:
--
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2015
期刊:
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影响因子:
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DOI:
10.1016/j.cor.2014.09.010
发表时间:
2015
期刊:
Comput. Oper. Res.
影响因子:
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