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Paper Abstract and Keywords
Presentation 2008-02-29 13:25
Sliding Window Variation of Antidictionary Data Compression
Takahiro Ota (PIT-nagano), Hiroyoshi Morita (UEC) IT2007-68 ISEC2007-165 WBS2007-99
Abstract (in Japanese) (See Japanese page) 
(in English) An antidictionary is the set of all minimal strings that never appear in an input string, and efficient adaptive data compression algorithms using a statistical model based on antidictionaries were proposed.
However, since the model is built by the whole past string, the algorithm needs a large computational space and there is a lowering of efficiency to adapt to local conditions in proportional to the string length.
To reduce the space and improve compression ratios, we propose two sliding window variations of the algorithm.The proposed algorithms build their models from a recent past string whose length is a constant in a sliding window.
It is shown that the proposed algorithms achieve 2% better compression ratios than the conventional algorithm and perform as well as popular compression algorithms such as the block-sorting compression algorithm by simulation results.
Keyword (in Japanese) (See Japanese page) 
(in English) antidictionary / sliding window / adaptive data compression / lossless / arithmetic coding / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 499, IT2007-68, pp. 127-132, Feb. 2008.
Paper # IT2007-68 
Date of Issue 2008-02-22 (IT, ISEC, WBS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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reproduction
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF IT2007-68 ISEC2007-165 WBS2007-99

Conference Information
Committee ISEC IT WBS  
Conference Date 2008-02-28 - 2008-02-29 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To IT 
Conference Code 2008-02-ISEC-IT-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Sliding Window Variation of Antidictionary Data Compression 
Sub Title (in English)  
Keyword(1) antidictionary  
Keyword(2) sliding window  
Keyword(3) adaptive data compression  
Keyword(4) lossless  
Keyword(5) arithmetic coding  
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1st Author's Name Takahiro Ota  
1st Author's Affiliation Nagano Prefectural Institute of Technology (PIT-nagano)
2nd Author's Name Hiroyoshi Morita  
2nd Author's Affiliation University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2008-02-29 13:25:00 
Presentation Time 25 minutes 
Registration for IT 
Paper # IT2007-68, ISEC2007-165, WBS2007-99 
Volume (vol) vol.107 
Number (no) no.499(IT), no.501(ISEC), no.503(WBS) 
Page pp.127-132 
#Pages
Date of Issue 2008-02-22 (IT, ISEC, WBS) 


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