Linear-size formulations for connected planar graph partitioning and political districting
Linear-size formulations for connected planar graph partitioning and political districting
复制标题
连接平面图分区和政治分区的线性大小公式
DOI:
10.1007/s11590-023-02070-0
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发表时间:
2024
影响因子:
1.6
通讯作者:
Hicks, Illya V.
中科院分区:
文献类型:
--
作者:
Zhang, Jack;Validi, Hamidreza;Buchanan, Austin;Hicks, Illya V.
Motivated by applications in political districting, we consider the task of partitioning thenvertices of a planar graph intokconnected components. We propose an extended formulation for this task that has two desirable properties: (i) it uses justO(n) variables, constraints, and nonzeros, and (ii) it isperfect. To explore its ability to solve real-world problems, we apply it to a political districting problem in which contiguity and population balance are imposed as hard constraints and compactness is optimized. Computational experiments show that, despite the model’s small size and integrality for connected partitioning, the population balance constraints are more troublesome to effectively impose. Nevertheless, we share our findings in hopes that others may find better ways to impose them.
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影响因子:
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发表时间:
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发表时间:
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