DocumentCode
3049507
Title
Compressed pattern matching for SEQUITUR
Author
Mitarai, Shuichi ; Hirao, Masahiro ; Matsumoto, Tetsuya ; Shinohara, Ayurni ; Takeda, Masayuki ; Arikawa, Setsuo
Author_Institution
Dept. of Inf., Kyushu Univ., Fukuoka, Japan
fYear
2001
fDate
2001
Firstpage
469
Lastpage
478
Abstract
SEQUITUR due to Nevill-Manning and Witten (see Journal of Artificial Intelligence Research, vol.7, p.67-82, 1997) is a powerful program to infer a phrase hierarchy from the input text, that also provides extremely effective compression of large quantities of semi-structured text. In this paper, we address the problem of searching in SEQUITUR compressed text directly. We show a compressed pattern matching algorithm that finds a pattern in compressed text without explicit decompression. We show that our algorithm is approximately 1.27 times faster than a decompression followed by an ordinal search
Keywords
data compression; pattern matching; text analysis; SEQUITUR; compressed pattern matching; compressed pattern matching algorithm; decompression; input text; ordinal search; phrase hierarchy; program; semi-structured text compression; Data compression; Informatics; Pattern matching; Size measurement; Software libraries;
fLanguage
English
Publisher
ieee
Conference_Titel
Data Compression Conference, 2001. Proceedings. DCC 2001.
Conference_Location
Snowbird, UT
ISSN
1068-0314
Print_ISBN
0-7695-1031-0
Type
conf
DOI
10.1109/DCC.2001.917178
Filename
917178
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