• Media type: Text; E-Article; Electronic Conference Proceeding
  • Title: Enumerating Range Modes
  • Contributor: Sumigawa, Kentaro [Author]; Chakraborty, Sankardeep [Author]; Sadakane, Kunihiko [Author]; Satti, Srinivasa Rao [Author]
  • Published: Schloss Dagstuhl – Leibniz-Zentrum für Informatik, 2020
  • Language: English
  • DOI: https://doi.org/10.4230/LIPIcs.ISAAC.2020.29
  • Keywords: range mode ; enumeration algorithm ; space-efficient data structure
  • Origination:
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  • Description: Given a sequence of elements, we consider the problem of indexing the sequence to support range mode queries - given a query range, find the element with maximum frequency in the range. We give indexing data structures for this problem; given a sequence, we construct a data structure that can be used later to process arbitrary queries. Our algorithms are efficient for small maximum frequency cases. We also consider a natural generalization of the problem: the range mode enumeration problem, for which there has been no known efficient algorithms. Our algorithms have query time complexities which are linear in the output size plus small terms.
  • Access State: Open Access