Suffixové pole pro velkou abecedu

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F08%3A00101220" target="_blank" >RIV/00216208:11320/08:00101220 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Suffix Array for Large Alphabet

Popis výsledku v původním jazyce

Burrows-Wheeler Transform (BWT) is used as the main part in block compression which has a good balance of speed and compression ratio. Suffix arrays are used in the coding phase of BWT and we focus on creating them for an alphabet larger than 256 symbols. The motivation for this work has been software project XBW - an application for compression of large XML files. The role of BWT is to reorder input before applying other algorithms. We describe and implement three families of algorithms for encoding. The first is inspired by the work of Sadakane and further improved by Larsson. The second family includes algorithm by Seward and algorithm by Itoh further improved by Kao. Finally we present algorithm by Karkkainen and Sanders for constructing su+-x arrays in linear time. As our main result we show that for textual data using syllables or words as symbols of alphabet improves both run time and compression ratio of block compression.

Název v anglickém jazyce

Suffix Array for Large Alphabet

Popis výsledku anglicky

Burrows-Wheeler Transform (BWT) is used as the main part in block compression which has a good balance of speed and compression ratio. Suffix arrays are used in the coding phase of BWT and we focus on creating them for an alphabet larger than 256 symbols. The motivation for this work has been software project XBW - an application for compression of large XML files. The role of BWT is to reorder input before applying other algorithms. We describe and implement three families of algorithms for encoding. The first is inspired by the work of Sadakane and further improved by Larsson. The second family includes algorithm by Seward and algorithm by Itoh further improved by Kao. Finally we present algorithm by Karkkainen and Sanders for constructing su+-x arrays in linear time. As our main result we show that for textual data using syllables or words as symbols of alphabet improves both run time and compression ratio of block compression.

Druh

D - Stať ve sborníku

CEP obor

JC - Počítačový hardware a software

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název statě ve sborníku

2008 Data Compression Conference (DCC 2008)

ISBN

0-7695-3121-0

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

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Název nakladatele

IEEE Computer Society Press

Místo vydání

Snowbird, Utah, USA

Místo konání akce

Snowbird, Utah, USA

Datum konání akce

1. 1. 2008

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000255196800093