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arXiv 1704.04888cs.GT
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低质量的无嫉妒匹配

Envy-free Matchings with Lower Quotas

Yu Yokoi

摘要:

虽然医院/居民问题的每个实例都允许稳定匹配,但具有较低配额的问题(HR-LQ)具有不具有稳定匹配的实例。对于这样的例子,我们期望存在一个无嫉妒匹配,这是一个放松的稳定匹配保持一种公平性。在本文中,我们调查了存在的嫉妒免费匹配在几个设置,医院有较低的配额,并不是所有的医生-医院对是可以接受的。我们首先表明,对于一个HR-LQ实例,我们可以有效地决定存在的嫉妒自由匹配。然后,我们考虑Huang(2010)的分类稳定匹配模型中的无嫉妒性,即,每个医院都有医生子集的上限和下限配额。我们发现,对于这个模型,决定存在的嫉妒自由匹配一般是NP-困难的,但在多项式时间可解的,如果配额是paramodular。

英文摘要:

While every instance of the Hospitals/Residents problem admits a stable matching, the problem with lower quotas (HR-LQ) has instances with no stable matching. For such an instance, we expect the existence of an envy-free matching, which is a relaxation of a stable matching preserving a kind of fairness property. In this paper, we investigate the existence of an envy-free matching in several settings, in which hospitals have lower quotas and not all doctor-hospital pairs are acceptable. We first show that, for an HR-LQ instance, we can efficiently decide the existence of an envy-free matching. Then, we consider envy-freeness in the Classified Stable Matching model due to Huang (2010), i.e., each hospital has lower and upper quotas on subsets of doctors. We show that, for this model, deciding the existence of an envy-free matching is NP-hard in general, but solvable in polynomial time if quotas are paramodular.

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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