Search Results

Documents authored by Marica, Edina


Document
Label Correcting Algorithms for the Multiobjective Temporal Shortest Path Problem

Authors: Edina Marica, Clemens Thielen, and Alina Wittmann

Published in: LIPIcs, Volume 373, 5th Symposium on Algorithmic Foundations of Dynamic Networks (SAND 2026)


Abstract
Given a directed, discrete-time temporal graph G = (V,R), a start node s ∈ V, and p ≥ 1 objectives, the single-source multiobjective temporal shortest path problem asks, for each v ∈ V, for the set of nondominated images of temporal s-v-paths together with a corresponding efficient path for each image. A recent general label setting algorithm for this problem relies on two properties of the objectives-monotonicity and isotonicity. Monotonicity generalizes the nonnegativity assumption required by label setting methods for the classical additive single-objective shortest path problem on static graphs, while isotonicity ensures that the order of the objective values of two paths is preserved when both are extended by the same arc. In this paper, we study the problem without assuming monotonicity and/or isotonicity. A key difficulty in this setting is that zero-duration temporal cycles may need to be traversed an arbitrary finite number of times to generate all nondominated images. This motivates the study of a restricted problem variant in which a maximum admissible path length K is imposed, and only paths containing at most K arcs are considered. We develop general label correcting algorithms for this setting and establish several sufficient conditions under which such a bound is not required, implying that the algorithms compute all nondominated images.

Cite as

Edina Marica, Clemens Thielen, and Alina Wittmann. Label Correcting Algorithms for the Multiobjective Temporal Shortest Path Problem. In 5th Symposium on Algorithmic Foundations of Dynamic Networks (SAND 2026). Leibniz International Proceedings in Informatics (LIPIcs), Volume 373, pp. 17:1-17:16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2026)


Copy BibTex To Clipboard

@InProceedings{marica_et_al:LIPIcs.SAND.2026.17,
  author =	{Marica, Edina and Thielen, Clemens and Wittmann, Alina},
  title =	{{Label Correcting Algorithms for the Multiobjective Temporal Shortest Path Problem}},
  booktitle =	{5th Symposium on Algorithmic Foundations of Dynamic Networks (SAND 2026)},
  pages =	{17:1--17:16},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-427-7},
  ISSN =	{1868-8969},
  year =	{2026},
  volume =	{373},
  editor =	{Mertzios, George B. and Richa, Andr\'{e}a W.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.SAND.2026.17},
  URN =		{urn:nbn:de:0030-drops-262518},
  doi =		{10.4230/LIPIcs.SAND.2026.17},
  annote =	{Keywords: temporal graphs, multiobjective optimization, shortest paths, label correcting algorithm}
}
Any Issues?
X

Feedback on the Current Page

CAPTCHA

Thanks for your feedback!

Feedback submitted to Dagstuhl Publishing

Could not send message

Please try again later or send an E-mail