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Worst-Case Bounds for Subadditive Geometric Graphs (1993) [4 citations — 1 self]

by Marshall Bern ,  David Eppstein
Proc. 9th ACM Symp. Comp. Geom
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Abstract:

We consider graphs such as the minimum spanning tree, minimum Steiner tree, minimum matching, and traveling salesman tour for n points in the d-dimensional unit cube. For each of these graphs, we show that the worst-case sum of the dth powers of edge lengths is O(log n). This is a consequence of a general "gap theorem": for any subadditive geometric graph, either the worst-case sum of edge lengths is O(n (d-1)/d ) and the sum of dth powers is O(log n), or the sum of edge lengths is #(n). We look more closely at some specific graphs: the worst-case sum of dth powers is O(1) for minimum matching, but #(log n) for traveling salesman tour, which answers a question of Snyder and Steele. 1. Introduction A worst-case, or a priori , bound on a geometric graph is a bound that depends only on the assumption that all vertices lie within a given container. Such a bound does not depend on the specific locations of vertices, nor on any probabilistic assumptions. Early papers especially ...

Citations

106 Steiner Minimal Trees – Gilbert, Pollak - 1968
17 Subadditive Euclidean functionals and non-linear growth in geometric probability – STEELE - 1981
9 Probabilistic and worst case analyses of classical problems of combinatorial optimization in Euclidean space – Steele - 1990
5 On Optimal Matchings – Ajtai, Komlós, et al. - 1984
5 How long can a Euclidean Traveling Salesman Tour be – Karloff - 1989
5 Worst-case growth rates of some classical problems of combinatorial optimization – Steele, Snyder - 1989
3 A priori inequalities for the euclidean traveling salesman – Snyder, Steele - 1992
2 Worst-case minimal rectilinear Steiner trees in all dimensions – Snyder - 1990
2 Worst-case greedy matchings in the unit d-cube – Snyder, Steele - 1990
1 Random planar matching and bin packing – Shor - 1985
1 Lower bounds for rectilinear Steiner trees in bounded space – Snyder - 1991
1 Computational Aspects of VSLI – Ullman - 1984