arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.09806cs.DS
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跟踪路径问题的结构参数化

Structural Parameterizations of Tracking Paths Problem

Pratibha Choudhary, Venkatesh Raman

摘要:

给定一个图$G$,其源顶点和目的顶点分别为$s,t\in V(G)$,\textsc{Tracking Paths}要求最小顶点集$T\subseteq V(G)$,使得从$s$到$t$的每条简单路径中遇到的顶点序列是唯一的。这个问题被证明\textsc{NP} -硬\cite{tr-j},并发现承认二次内核时,所需的解决方案\cite{quadratic}的大小参数化。根据最近的趋势,第一次,我们研究\textsc{Tracking Paths}的输入图的结构参数,参数,测量输入图有多远,从一个简单的实例。我们证明了\textsc{Tracking Paths}允许固定参数易处理(\textsc{FPT})算法时,参数的顶点覆盖的大小,和集群顶点删除集的输入图的大小。

英文摘要:

Given a graph $G$ with source and destination vertices $s,t\in V(G)$ respectively, \textsc{Tracking Paths} asks for a minimum set of vertices $T\subseteq V(G)$, such that the sequence of vertices encountered in each simple path from $s$ to $t$ is unique. The problem was proven \textsc{NP}-hard \cite{tr-j} and was found to admit a quadratic kernel when parameterized by the size of the desired solution \cite{quadratic}. Following recent trends, for the first time, we study \textsc{Tracking Paths} with respect to structural parameters of the input graph, parameters that measure how far the input graph is, from an easy instance. We prove that \textsc{Tracking Paths} admits fixed-parameter tractable (\textsc{FPT}) algorithms when parameterized by the size of vertex cover, and the size of cluster vertex deletion set for the input graph.

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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