Discovering best variable-length-don’t-care patterns

Shunsuke Inenaga, Hideo Bannai, Ayumi Shinohara, Masayuki Takeda, Setsuo Arikawa

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

13 被引用数 (Scopus)

抄録

A variable-length-don’t-care pattern (VLDC pattern) is an element of set Π = (Σ∪{∗}), where Σ is an alphabet and ∗ is a wildcard matching any string in Σ. Given two sets of strings, we consider the problem of finding the VLDC pattern that is the most common to one, and the least common to the other. We present a practical algorithm to find such best VLDC patterns exactly, powerfully sped up by pruning heuristics. We introduce two versions of our algorithm: one employs a pattern matching machine (PMM) whereas the other does an index structure called the Wildcard Directed Acyclic Word Graph (WDAWG). In addition, we consider a more generalized problem of finding the best pair ‹q, k›, where k is the window size that specifies the length of an occurrence of the VLDC pattern q matching a string w. We present three algorithms solving this problem with pruning heuristics, using the dynamic programming (DP), PMMs and WDAWGs, respectively. Although the two problems are NP-hard, we experimentally show that our algorithms run remarkably fast.

本文言語英語
ホスト出版物のタイトルDiscovery Science - 5th International Conference, DS 2002, Proceedings
編集者Steffen Lange, Ken Satoh, Carl H. Smith
出版社Springer Verlag
ページ86-97
ページ数12
ISBN(印刷版)3540001883, 9783540001881
DOI
出版ステータス出版済み - 2002
イベント5th International Conference on Discovery Science, DS 2002 - Lubeck, ドイツ
継続期間: 11 24 200211 26 2002

出版物シリーズ

名前Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
2534
ISSN(印刷版)0302-9743
ISSN(電子版)1611-3349

その他

その他5th International Conference on Discovery Science, DS 2002
国/地域ドイツ
CityLubeck
Period11/24/0211/26/02

All Science Journal Classification (ASJC) codes

  • 理論的コンピュータサイエンス
  • コンピュータ サイエンス(全般)

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