Succinct indexes for circular patterns

  • Authors:
  • Wing-Kai Hon;Chen-Hua Lu;Rahul Shah;Sharma V. Thankachan

  • Affiliations:
  • National Tsing Hua University, Taiwan;Academia Sinica, Taiwan;Louisiana State University;Louisiana State University

  • Venue:
  • ISAAC'11 Proceedings of the 22nd international conference on Algorithms and Computation
  • Year:
  • 2011

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Abstract

Circular patterns are those patterns whose circular permutations are also valid patterns. These patterns arise naturally in bioinformatics and computational geometry. In this paper, we consider succinct indexing schemes for a set of d circular patterns of total length n, with each character drawn from an alphabet of size σ. Our method is by defining the popular Burrows-Wheeler transform (BWT) on circular patterns, based on which we achieve succinct indexes with space nlogσ(1+o(1))+O(n)+O(dlogn) bits, while pattern matching or dictionary matching queries can be supported efficiently.