Near-optimal approximate decremental all pairs shortest paths

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Abstract

In this paper we consider the decremental approximate all-pairs shortest paths (APSP) problem, where given a graph G the goal is to maintain approximate shortest paths between all pairs of nodes in G under a sequence of online adversarial edge deletions. We present a decremental APSP algorithm for undirected weighted graphs with (2 + ϵ)k - 1 stretch, O(mn 1/k+o(1) log (nW)) total update time and O(loglog (nW)) query time for a fixed constant ϵ, where W is the maximum edge weight (assuming the minimum edge weight is 1) and k is any integer parameter. This is an exponential improvement both in the stretch and in the query time over previous works.

Original languageEnglish
Title of host publicationProceedings - 59th Annual IEEE Symposium on Foundations of Computer Science, FOCS 2018
EditorsMikkel Thorup
PublisherIEEE Computer Society
Pages170-181
Number of pages12
ISBN (Electronic)9781538642306
DOIs
StatePublished - 30 Nov 2018
Event59th Annual IEEE Symposium on Foundations of Computer Science, FOCS 2018 - Paris, France
Duration: 7 Oct 20189 Oct 2018

Publication series

NameProceedings - Annual IEEE Symposium on Foundations of Computer Science, FOCS
Volume2018-October

Conference

Conference59th Annual IEEE Symposium on Foundations of Computer Science, FOCS 2018
Country/TerritoryFrance
CityParis
Period7/10/189/10/18

Keywords

  • Dynamic algorithms
  • Emulator
  • Shortest paths

All Science Journal Classification (ASJC) codes

  • General Computer Science

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