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Fast Pattern-Matching on Indeterminate Strings

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F05%3A03110723" target="_blank" >RIV/68407700:21230/05:03110723 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Fast Pattern-Matching on Indeterminate Strings

  • Original language description

    In a string x on an alphabet, a position i is said to be indeterminate iff x[i] may be any one of a specified subset of the aplhabet. A string x containing indeterminate positions is therefore also said to be indeterminate. Indeterminate strings can arise in DNA and amino acid sequences as well as in cryptological applications. In this paper we describe fast algorithms for finding all occurrences of a pattern p=p[1..m] in a given text x=x[1..n], where either or both of p and x can be indeterminate. Ouralgorithms are based on the Sunday variant of the Boyer-Moore pattern-matching algorithm, one of the fastest exact pattern-matching algorithms known. The methodology we describe applies more generally to all variants of Boyer-Moore (such as Horspool's, for example) that depend only on calculation of the "rightmost shift" array: our method therefore assumes that the alphabet is indexed (essentially, an integer alphabet), a requirement normally satisfied in practice.

  • Czech name

    Rychlé vyhledávání v neurčitých řetězcích

  • Czech description

    Pozice i v řetězci x nad vstupní abecedou je nazvána neurčitá právě tehdy pokud x[i] může být libovolnou z podmnožin vstupní abecedy. Řetězec x obsahující neurčité pozice se také nazývá neurčitý. V tomto článku popisujeme rychlý algoritmus pro vyhledávání v textu, kde vzorek nebo text nebo oba mohou být neurčitými řetězci. Náš algoritmus je založen na Sunday variantě Boyer-Mooreova algoritmu, jednoho z nejrychlejších vyhledávacích algoritmů.

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    IN - Informatics

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2005

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Proceedings of the 16th Australasian Workshop on Combinatorial Algorithms

  • ISBN

    0-646-45252-5

  • ISSN

  • e-ISSN

  • Number of pages

    14

  • Pages from-to

    415-428

  • Publisher name

    University of Ballarat

  • Place of publication

    Ballarat, Victoria

  • Event location

    Ballarat, Victoria, Australia

  • Event date

    Sep 18, 2005

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article