Abstract
An instance of the non-preemptive tree packing problem consists of an undirected graph \(G=(V,E)\) together with a weight w(e) for every edge \(e\in E\). The goal is to activate every edge e for some time interval of length w(e), such that the activated edges keep G connected for the longest possible overall time.
We derive a variety of results on this problem. The problem is strongly NP-hard even on graphs of treewidth 2, and it does not allow a polynomial time approximation scheme (unless P = NP). Furthermore, we discuss the performance of a simple greedy algorithm, and we construct and analyze a number of parameterized and exact algorithms.
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Acknowledgements
Stefan Lendl and Lasse Wulf acknowledge the support of the Austrian Science Fund (FWF): W1230. Gerhard Woeginger acknowledges support by the DFG RTG 2236 “UnRAVeL”.
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Lendl, S., Woeginger, G., Wulf, L. (2021). Non-preemptive Tree Packing. In: Flocchini, P., Moura, L. (eds) Combinatorial Algorithms. IWOCA 2021. Lecture Notes in Computer Science(), vol 12757. Springer, Cham. https://doi.org/10.1007/978-3-030-79987-8_32
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DOI: https://doi.org/10.1007/978-3-030-79987-8_32
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