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Title: Patterns with bounded treewidth
Authors: Reidenbach, Daniel
Schmid, Markus L.
Keywords: Pattern languages
Membership problem
Extended regular expressions
Parameterised pattern matching
Issue Date: 2014
Publisher: © Elsevier Inc.
Citation: REIDENBACH, D. and SCHMID, M.L., 2014. Patterns with bounded treewidth. Information and Computation, 239, pp. 87 - 99.
Abstract: A pattern is a string consisting of variables and terminal symbols, and its language is the set of all words that can be obtained by substituting arbitrary words for the variables. The membership problem for pattern languages, i.e., deciding on whether or not a given word is in the pattern language of a given pattern is NP-complete. We show that any parameter of patterns that is an upper bound for the treewidth of appropriate encodings of patterns as relational structures, if restricted, allows the membership problem for pattern languages to be solved in polynomial time. Furthermore, we identify new such parameters.
Description: NOTICE: this is the author’s version of a work that was accepted for publication in Information and Computation. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Information and Computation, 239, Dec 2014, DOI: 10.1016/j.ic.2014.08.010
Version: Accepted for publication
DOI: 10.1016/j.ic.2014.08.010
URI: https://dspace.lboro.ac.uk/2134/16579
Publisher Link: http://dx.doi.org/10.1016/j.ic.2014.08.010
ISSN: 0890-5401
Appears in Collections:Published Articles (Computer Science)

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