New Approximation Algorithms for the Steiner Tree Problems

被引:0
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作者
Marek Karpinski
Alexander Zelikovsky
机构
[1] University of Bonn,Department of Computer Science
[2] International Computer Science Institute,Department of Computer Science, Thornton Hall
[3] University of Virginia,undefined
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Mathematical Modeling; Approximation Algorithm; Industrial Mathematic; Discrete Geometry; Approximation Ratio;
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摘要
The Steiner tree problem asks for the shortest tree connecting a given set of terminal points in a metric space. We design new approximation algorithms for the Steiner tree problems using a novel technique of choosing Steiner points in dependence on the possible deviation from the optimal solutions. We achieve the best up to now approximation ratios of 1.644 in arbitrary metric and 1.267 in rectilinear plane, respectively.
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页码:47 / 65
页数:18
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