Relative FM-Indexes

  • Djamal Belazzougui
  • Travis Gagie
  • Simon Gog
  • Giovanni Manzini
  • Jouni Sirén
Conference paper

DOI: 10.1007/978-3-319-11918-2_6

Part of the Lecture Notes in Computer Science book series (LNCS, volume 8799)
Cite this paper as:
Belazzougui D., Gagie T., Gog S., Manzini G., Sirén J. (2014) Relative FM-Indexes. In: Moura E., Crochemore M. (eds) String Processing and Information Retrieval. SPIRE 2014. Lecture Notes in Computer Science, vol 8799. Springer, Cham

Abstract

Intuitively, if two strings S1 and S2 are sufficiently similar and we already have an FM-index for S1 then, by storing a little extra information, we should be able to reuse parts of that index in an FM-index for S2. We formalize this intuition and show that it can lead to significant space savings in practice, as well as to some interesting theoretical problems.

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Djamal Belazzougui
    • 1
    • 2
  • Travis Gagie
    • 1
    • 2
  • Simon Gog
    • 3
  • Giovanni Manzini
    • 4
  • Jouni Sirén
    • 5
  1. 1.University of HelsinkiFinland
  2. 2.Helsinki Institute for Information TechnologyFinland
  3. 3.Karlsruhe Institute of TechnologyGermany
  4. 4.University of Eastern PiedmontItaly
  5. 5.University of ChileChile

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