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I/O-Efficient Undirected Shortest Paths

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Algorithms - ESA 2003 (ESA 2003)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 2832))

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Abstract

We present an I/O-efficient algorithm for the single-source shortest path problem on undirected graphs G=(V,E). Our algorithm performs \(\mathcal{O}\)(\(\sqrt{(VE/B){\rm log_2}(W/w)}\)sort(V + E)loglog(VB/E)) I/Os, where w ∈ ℝ +  and W ∈ ℝ +  are the minimal and maximal edge weights in G, respectively. For uniform random edge weights in (0,1], the expected I/O-complexity of our algorithm is \(\mathcal{O}\)(\(\sqrt{VE/B} + ((V + E)/B){log_2}B +\)sort(V+E)).

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Meyer, U., Zeh, N. (2003). I/O-Efficient Undirected Shortest Paths. In: Di Battista, G., Zwick, U. (eds) Algorithms - ESA 2003. ESA 2003. Lecture Notes in Computer Science, vol 2832. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-39658-1_40

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  • DOI: https://doi.org/10.1007/978-3-540-39658-1_40

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-20064-2

  • Online ISBN: 978-3-540-39658-1

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