A Factor 3/2 Approximation for Generalized Steiner Tree Problem with Distances One and Two

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Berman, Piotr
Karpinski, Marek
Zelikovsky, Alex
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Abstract
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We design a 3/2 approximation algorithm for the Generalized Steiner Tree problem (GST) in metrics with distances 1 and 2. This is the first polynomial time approximation algorithm for a wide class of non-geometric metric GST instances with approximation factor below 2.
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Computer Science - Computational Complexity, Computer Science - Discrete Mathematics, Computer Science - Data Structures and Algorithms
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