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Paper Abstract and Keywords
Presentation 2018-03-09 14:20
Improved Lossless Compression by Substring Enumeration Using Sorting
Takahiro Ota (NPIT), Akiko Manada (UEC) IT2017-135 ISEC2017-123 WBS2017-116
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes an improved compression by substring enumeration (CSE) with a finite alphabet. For an input string, the conventional algorithm encode its substrings including minimal forbidden words in lexicographical order. For improving compression ratios, the proposed algorithm encodes its substrings which are sorted by frequencies of proper their prefixes and suffixes. Experimental results show that compression ratios of the proposed algorithm are better than or equal to those of a conventional algorithm with a finite alphabet and well-known high-performance compressor bzip2 for all files and 11 files in 14 files of Calgary corpus, respectively.
Keyword (in Japanese) (See Japanese page) 
(in English) CSE / Compression Ratio / Sorting / Data Compression / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 487, IT2017-135, pp. 191-196, March 2018.
Paper # IT2017-135 
Date of Issue 2018-03-01 (IT, ISEC, WBS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
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 IT2017-135 ISEC2017-123 WBS2017-116

Conference Information
Committee WBS IT ISEC  
Conference Date 2018-03-08 - 2018-03-09 
Place (in Japanese) (See Japanese page) 
Place (in English) Katsusika Campas, Tokyo University of Science 
Topics (in Japanese) (See Japanese page) 
Topics (in English) joint meeting of IT, ISEC, and WBS 
Paper Information
Registration To IT 
Conference Code 2018-03-WBS-IT-ISEC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improved Lossless Compression by Substring Enumeration Using Sorting 
Sub Title (in English)  
Keyword(1) CSE  
Keyword(2) Compression Ratio  
Keyword(3) Sorting  
Keyword(4) Data Compression  
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1st Author's Name Takahiro Ota  
1st Author's Affiliation Nagano Prefectural Institute of Technology (NPIT)
2nd Author's Name Akiko Manada  
2nd Author's Affiliation The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2018-03-09 14:20:00 
Presentation Time 25 minutes 
Registration for IT 
Paper # IT2017-135, ISEC2017-123, WBS2017-116 
Volume (vol) vol.117 
Number (no) no.487(IT), no.488(ISEC), no.489(WBS) 
Page pp.191-196 
#Pages 6 
Date of Issue 2018-03-01 (IT, ISEC, WBS) 

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