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arXiv 2602.16465math.OCcs.DS
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两阶段鲁棒选择问题在预算不确定性中的复杂性景观

The Complexity Landscape of Two-Stage Robust Selection Problems with Budgeted Uncertainty

University of Passau(帕绍大学);IT University of Copenhagen(哥本哈根信息技术大学)

Marc Goerigk, Dorothee Henke, Lasse Wulf

AI总结:

本文研究了两阶段鲁棒选择问题在预算不确定性下的复杂性,证明了连续预算不确定性下的两阶段选择问题为NP难,而代表选择问题则可在多项式时间内解决。

摘要:

在鲁棒优化中,一种标准的不确定性集是预算不确定性,其中为每个参数给出可能的区间值,并且总偏差从其下界被限制。在两阶段设置中,需要区分离散和连续的预算不确定性。此类问题的复杂性大多未被探索,特别是当基础的名义优化问题简单时,如选择问题。在本文中,我们为三种类型的选择问题和三种类型的预算不确定性集给出了长期存在的复杂性开放问题的全面回答。特别是,我们证明了具有连续预算不确定性的两阶段选择问题是NP难的,而相应的两阶段代表选择问题可以在多项式时间内解决。我们的难度结果表明,具有连续预算不确定性的两阶段分配问题也是NP难的。

英文摘要:

A standard type of uncertainty set in robust optimization is budgeted uncertainty, where an interval of possible values for each parameter is given and the total deviation from their lower bounds is bounded. In the two-stage setting, discrete and continuous budgeted uncertainty have to be distinguished. The complexity of such problems is largely unexplored, in particular if the underlying nominal optimization problem is simple, such as for selection problems. In this paper, we give a comprehensive answer to long-standing open complexity questions for three types of selection problems and three types of budgeted uncertainty sets. In particular, we demonstrate that the two-stage selection problem with continuous budgeted uncertainty is NP-hard, while the corresponding two-stage representative selection problem is solvable in polynomial time. Our hardness result implies that also the two-stage assignment problem with continuous budgeted uncertainty is NP-hard.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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