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Paper Abstract and Keywords
Presentation 2010-07-22 09:50
An Efficient Bayes Coding Algorithm for Context Tree Sources with Unknown Alphabet
Hiroki Iwama, Kenichi Teramoto, Takashi Ishida, Masayuki Goto (Waseda Univ.) IT2010-11
Abstract (in Japanese) (See Japanese page) 
(in English) In general universal coding, it is supposed that every symbol in alphabet appears. However, some symbols may not apper in data sequence inpractice.
Then source coding algorithms for sources with unknown alphabet have been propsed. On the other hand, it is difficult to use the Bayes cording algorithm for a source with unknown alphabet in practice, because the algorithm has huge computational complexity. In this paper, we propse an algorithm that has the identical compression performance and less complexity as the conventional method.
Additionally we formularize an extended algorithm for tree sources. Furthermore we show that the average computational complexity converges asymptotically.
Finally we show the simulation experiment for asymptotic performances of conventional and propsed methods.
Keyword (in Japanese) (See Japanese page) 
(in English) Bayes coding / source coding / tree source / computaional complexity / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 137, IT2010-11, pp. 1-6, July 2010.
Paper # IT2010-11 
Date of Issue 2010-07-15 (IT) 
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 IT2010-11

Conference Information
Committee IT  
Conference Date 2010-07-22 - 2010-07-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Kogakuin University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IT 
Conference Code 2010-07-IT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Efficient Bayes Coding Algorithm for Context Tree Sources with Unknown Alphabet 
Sub Title (in English)  
Keyword(1) Bayes coding  
Keyword(2) source coding  
Keyword(3) tree source  
Keyword(4) computaional complexity  
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1st Author's Name Hiroki Iwama  
1st Author's Affiliation Waseda University (Waseda Univ.)
2nd Author's Name Kenichi Teramoto  
2nd Author's Affiliation Waseda University (Waseda Univ.)
3rd Author's Name Takashi Ishida  
3rd Author's Affiliation Waseda University (Waseda Univ.)
4th Author's Name Masayuki Goto  
4th Author's Affiliation Waseda University (Waseda Univ.)
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Speaker Author-1 
Date Time 2010-07-22 09:50:00 
Presentation Time 25 minutes 
Registration for IT 
Paper # IT2010-11 
Volume (vol) vol.110 
Number (no) no.137 
Page pp.1-6 
#Pages 6 
Date of Issue 2010-07-15 (IT) 

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