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Generalised k-Steiner tree problems in normed planes

By Marcus Brazil, Charl J. Ras, Konrad Swanepoel and Doreen A. Thomas

Abstract

The 1-Steiner tree problem, the problem of constructing a Steiner minimum tree containing at most one Steiner point, has been solved in the Euclidean plane by Georgakopoulos and Papadimitriou using plane subdivisions called oriented Dirichlet cell partitions. Their algorithm produces an optimal solution within $\mathcal{O}(n^2)$ time. In this paper we generalise their approach in order to solve the $k$-Steiner tree problem, in which the Steiner minimum tree may contain up to $k$ Steiner points for a given constant $k$. We also extend their approach further to encompass arbitrary normed planes, and to solve a much wider class of problems, including the $k$-bottleneck Steiner tree problem and other generalised $k$-Steiner tree problems. We show that, for any fixed $k$, such problems can be solved in $\mathcal{O}(n^{2k})$ time

Topics: QA Mathematics
Publisher: Springer
Year: 2015
DOI identifier: 10.1007/s00453-013-9780-5
OAI identifier: oai:eprints.lse.ac.uk:41657
Provided by: LSE Research Online

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