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The weighted 2-metric dimension of trees in the non-landmarks model

机译:非地标模型中树木的加权2度量维

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Let T = (V, E) be a tree graph with non-negative costs defined on the vertices. A vertex tau is called a separating vertex for u and v if the distances of tau to u and v are not equal. A set of vertices L subset of V is a feasible solution for the non-landmarks model (NL), if for every pair of distinct vertices, u, v is an element of V L, there are at least two vertices of L separating them. Such a feasible solution is called a landmark set. We analyze the structure of landmark sets for trees and design a linear time algorithm for finding a minimum cost landmark set for a given tree graph. (C) 2015 Elsevier B.V. All rights reserved.
机译:令T =(V,E)为树图,在顶点上定义非负成本。如果tau到u和v的距离不相等,则tau称为u和v的分离顶点。 V的一组顶点L子集是非地标模型(NL)的可行解决方案,如果对于每对不同的顶点,u,v是V L的元素,则至少有两个L分离的顶点他们。这种可行的解决方案称为地标集。我们分析了树的地标集的结构,并设计了线性时间算法来查找给定树图的最小成本地标集。 (C)2015 Elsevier B.V.保留所有权利。

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