Medium-space algorithms for inverse BWT

  • Authors:
  • Juha Kärkkäinen;Simon J. Puglisi

  • Affiliations:
  • Department of Computer Science, University of Helsinki, Finland;School of Computer Science and Information Technology, Royal Melbourne Institute of Technology, Australia

  • Venue:
  • ESA'10 Proceedings of the 18th annual European conference on Algorithms: Part I
  • Year:
  • 2010

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Abstract

The Burrows-Wheeler transform is a powerful tool for data compression and has been the focus of intense research in the last decade. Little attention, however, has been paid to the inverse transform, even though it is a bottleneck in decompression. We introduce three new inversion algorithms with improved performance in a wide range of the space-time spectrum, as confirmed by both theoretical analysis and experimental comparison.