• Media type: Electronic Conference Proceeding; E-Article; Text
  • Title: On Extensions of Maximal Repeats in Compressed Strings
  • Contributor: Pape-Lange, Julian [Author]
  • imprint: Schloss Dagstuhl – Leibniz-Zentrum für Informatik, 2020
  • Language: English
  • DOI: https://doi.org/10.4230/LIPIcs.CPM.2020.27
  • Keywords: Combinatorics on compressed strings ; Compact suffix automata ; Maximal repeats ; LZ77 ; CDAWGs ; Burrows-Wheeler transform conjecture ; Extensions of maximal repeats ; Burrows-Wheeler transform
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  • Description: This paper provides upper bounds for several subsets of maximal repeats and maximal pairs in compressed strings and also presents a formerly unknown relationship between maximal pairs and the run-length Burrows-Wheeler transform. This relationship is used to obtain a different proof for the Burrows-Wheeler conjecture which has recently been proven by Kempa and Kociumaka in "Resolution of the Burrows-Wheeler Transform Conjecture". More formally, this paper proves that the run-length Burrows-Wheeler transform of a string S with z_S LZ77-factors has at most 73(log₂ |S|)(z_S+2)² runs, and if S does not contain q-th powers, the number of arcs in the compacted directed acyclic word graph of S is bounded from above by 18q(1+log_q |S|)(z_S+2)².
  • Access State: Open Access