Algorithms (Mar 2024)

Path Algorithms for Contact Sequence Temporal Graphs

  • Sanaz Gheibi,
  • Tania Banerjee,
  • Sanjay Ranka,
  • Sartaj Sahni

DOI
https://doi.org/10.3390/a17040148
Journal volume & issue
Vol. 17, no. 4
p. 148

Abstract

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This paper proposes a new time-respecting graph (TRG) representation for contact sequence temporal graphs. Our representation is more memory-efficient than previously proposed representations and has run-time advantages over the ordered sequence of edges (OSE) representation, which is faster than other known representations. While our proposed representation clearly outperforms the OSE representation for shallow neighborhood search problems, it is not evident that it does so for different problems. We demonstrate the competitiveness of our TRG representation for the single-source all-destinations fastest, min-hop, shortest, and foremost paths problems.

Keywords