Construction of Aho Corasick automaton in linear time for integer alphabets

Shiri Dori; Gad M. Landau

doi:10.1016/j.ipl.2005.11.019

Construction of Aho Corasick automaton in linear time for integer alphabets

Shiri Dori, Gad M. Landau

Department of Computer Science

Research output: Contribution to journal › Article › peer-review

Abstract

We present a new simple algorithm that constructs an Aho Corasick automaton for a set of patterns, P, of total length n, in O(n) time and space for integer alphabets. Processing a text of size m over an alphabet Σ with the automaton costs O(mlog|Σ|+k), where there are k occurrences of patterns in the text. A new, efficient implementation of nodes in the Aho Corasick automaton is introduced, which works for suffix trees as well.

Original language	English
Pages (from-to)	66-72
Number of pages	7
Journal	Information Processing Letters
Volume	98
Issue number	2
DOIs	https://doi.org/10.1016/j.ipl.2005.11.019
State	Published - 30 Apr 2006

Bibliographical note

Funding Information:
* Corresponding author. Tel.: +972 4 828 8375, fax: +972 4 824 9331. E-mail address: [email protected] (S. Dori). 1 Tel.: +972 4 824 0103, fax: +972 4 824 9331. Partially supported by the Israel Science Foundation grants 282/01 and 35/05.

Keywords

Design of algorithms
String matching
Suffix array
Suffix tree

ASJC Scopus subject areas

Theoretical Computer Science
Signal Processing
Information Systems
Computer Science Applications

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10.1016/j.ipl.2005.11.019

Cite this

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abstract = "We present a new simple algorithm that constructs an Aho Corasick automaton for a set of patterns, P, of total length n, in O(n) time and space for integer alphabets. Processing a text of size m over an alphabet Σ with the automaton costs O(mlog|Σ|+k), where there are k occurrences of patterns in the text. A new, efficient implementation of nodes in the Aho Corasick automaton is introduced, which works for suffix trees as well.",

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Construction of Aho Corasick automaton in linear time for integer alphabets

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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