Computing the Center of Uncertain Points on Cactus Graphs

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Abstract

In this paper, we consider the (weighted) one-center problem of uncertain points on a cactus graph. Given are a cactus graph G and a set of n uncertain points. Each uncertain point has m possible locations on G with probabilities and a non-negative weight. The (weighted) one-center problem aims to compute a point (the center) x∗ on G to minimize the maximum (weighted) expected distance from x∗ to all uncertain points. No previous algorithm is known for this problem. In this paper, we propose an O(| G| + mnlog mn) -time algorithm for solving it. Since the input is O(| G| + mn), our algorithm is almost optimal.
Original languageEnglish
Title of host publicationLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
EditorsSun-Yuan Hsieh, Ling-Ju Hung, Chia-Wei Lee
Place of Publicationdeu
PublisherSpringer Science and Business Media Deutschland GmbH
Pages233-245
Number of pages13
Volume13889 LNCS
ISBN (Print)9783031343469
DOIs
StatePublished - Jan 1 2023
Event34th International Workshop on Combinatorial Algorithms, IWOCA 2023 - Tainan, Taiwan, Province of China
Duration: Jun 7 2023Jun 10 2023

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
PublisherSpringer Science and Business Media Deutschland GmbH
Volume13889 LNCS
ISSN (Print)03029743
ISSN (Electronic)16113349

Conference

Conference34th International Workshop on Combinatorial Algorithms, IWOCA 2023
Country/TerritoryTaiwan, Province of China
CityTainan
Period06/7/2306/10/23

Keywords

  • Algorithms
  • Cactus Graph
  • One-Center
  • Uncertain Points

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