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arXiv · 1903.06061

Maximum Cut Parameterized by Crossing Number

Markus Chimani·Christine Dahn·Martina Juhnke-Kubitzke·Nils M. Kriege·Petra Mutzel·Alexander Nover
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Abstract

Given an edge-weighted graph $G$ on $n$ nodes, the NP-hard Max-Cut problem asks for a node bipartition such that the sum of edge weights joining the different partitions is maximized. We propose a fixed-parameter tractable algorithm parameterized by the number $k$ of crossings in a given drawing of $G$. Our algorithm achieves a running time of $O(2^k \cdot p(n + k))$, where $p$ is the polynomial running time for planar Max-Cut. The only previously known similar algorithm [8] is restricted to 1-planar graphs (i.e., at most one crossing per edge) and its dependency on $k$ is of order $3^k$ . A direct consequence of our result is that Max-Cut is fixed-parameter tractable w.r.t. the crossing number, even without a given drawing. Moreover, the results naturally carry over to the minor crossing number.

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Markus Chimani, Christine Dahn, Martina Juhnke-Kubitzke, Nils M. Kriege, Petra Mutzel, Alexander Nover. 2019-03-14. Maximum Cut Parameterized by Crossing Number. https://doi.org/10.7155/jgaa.00523

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