Multiple pattern matching in LZW compressed text

Takuya Kida, Masayuki Takeda, Ayumi Shinohara, Masamichi Miyazaki, Setsuo Arikawa

研究成果: Contribution to journalArticle査読

52 被引用数 (Scopus)


In this paper we address the problem of searching in LZW compressed text directly, and present a new algorithm for finding multiple patterns by simulating the move of the Aho-Corasick pattern matching machine. The new algorithm finds all occurrences of multiple patterns whereas the algorithm proposed by Amir, Benson, and Farach finds only the first occurrence of a single pattern. The new algorithm runs in O(n + m2 + r) time using O(n + m2) space, where n is the length of the compressed text, m is the length of the total length of the patterns, and r is the number of occurrences of the patterns. We implemented a simple version of the algorithm, and showed that it is approximately twice faster than a decompression followed by a search using the Aho-Corasick machine.

ジャーナルUnknown Journal
出版ステータス出版済み - 1998

All Science Journal Classification (ASJC) codes

  • ハードウェアとアーキテクチャ
  • 電子工学および電気工学


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