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Minimum Eccentricity Shortest Paths in some Structured Graph Classes

机译:某些结构图类中的最小偏心距最短路径

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We investigate the Minimum Eccentricity Shortest Path problem in some structured graph classes. It asks for a given graph to find a shortest path with minimum eccentricity. Although it is NP-hard in general graphs, we demonstrate that a minimum eccentricity shortest path can be found in linear time for distance-hereditary graphs (generalizing the previous result for trees) and give a generalised approach which allows to solve the problem in polynomial time for other graph classes. This includes chordal graphs, dually chordal graphs, graphs with bounded tree-length, and graphs with bounded hyperbolicity. Additionally, we give a simple algorithm to compute an additive approximation for graphs with bounded tree-length and graphs with bounded hyperbolicity.
机译:我们研究了一些结构化图类中的最小偏心距最短路径问题。它要求给定的图以最小的离心率找到最短的路径。尽管在一般图中它是NP难的,但我们证明了对于距离遗传图,线性时间中可以找到最小的偏心距最短路径(对树而言,归纳了先前的结果),并给出了一种允许解决多项式问题的广义方法。其他图类的时间。这包括和弦图,对弦和弦图,具有树长度的图和具有双曲率的图。此外,我们提供了一种简单的算法来计算具有树长度限制的图和具有双曲率限制的图的加法逼近。

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