Abstract
A dominating set \(D \subseteq V\) in a graph \(G=(V,E)\) is a subset of vertices such that every vertex in V belongs to D or has at least one neighbour in D. In this paper we deal with the problem of finding an approximation of the dominating set of minimum size, i.e., the approximation of the minimum dominating set problem (MDS) in a distributed setting. A distributed algorithm that runs in a constant number of rounds, independent of the size of the network, is called local. In research on distributed local algorithms it is commonly assumed that each vertex has an unique identifier. However, as was shown by Göös et al., for certain classes of graphs (for example, lift-closed bounded degree graphs) identifiers are unnecessary and only a port numbering is needed. We confirm that the same remains true for the MDS up to a constant factor in the class of planar graphs. Namely, we present a local deterministic 694-approximation algorithm for the MDS in planar graphs in a model with a port numbering only. Moreover, our algorithm uses only short messages, i.e., in each round each node can send only a \(O(\log {|V|})\)-bit message to each of its neighbours.
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Acknowledgments
We would like to thank the anonymous reviewers of the manuscript and Edyta Szymańska for providing us with constructive comments and suggestions.
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A preliminary version of this work [14] appeared in PODC’13.
The research has been supported by Grant No. N206 565740.
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Wawrzyniak, W. A local approximation algorithm for minimum dominating set problem in anonymous planar networks. Distrib. Comput. 28, 321–331 (2015). https://doi.org/10.1007/s00446-015-0247-6
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DOI: https://doi.org/10.1007/s00446-015-0247-6