Pattern Matching in Text Compressed by Using Antidictionaries

  • Authors:
  • Yusuke Shibata;Masayuki Takeda;Ayumi Shinohara;Setsuo Arikawa

  • Affiliations:
  • -;-;-;-

  • Venue:
  • CPM '99 Proceedings of the 10th Annual Symposium on Combinatorial Pattern Matching
  • Year:
  • 1999

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Abstract

In this paper we focus on the problem of compressed pattern matching for the text compression using antidictionaries, which is a new compression scheme proposed recently by Crochemore et al. (1998). We show an algorithm which preprocesses a pattern of length m and an antidictionary M in O(m2 + ||M||) time, and then scans a compressed text of length n in O(n + r) time to find all pattern occurrences, where ||M|| is the total length of strings in M and r is the number of the pattern occurrences.