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Paper Abstract and Keywords
Presentation 2011-01-18 11:00
Disk Allocation Methods for Cartesian Product Files by using Unequal Error Protection Codes
Tomohiko Saito, Hiroshige Inazumi (Aoyama Gakuin Univ.), Toshiyasu Matsushima (Waseda Univ.), Shigeichi Hirasawa (Cyber Univ.) IT2010-55
Abstract (in Japanese) (See Japanese page) 
(in English) Allocation methods for Cartesian product files on multiple disks by using linear error-correcting codes were proposed. In this paper, we propose an allocation method using unequal error protection(UEP) codes. Codewords of an UEP code have some special bits which are protected against a greater number of errors than other bits. We firstly assume a model that ``*'', which means ``don't care'', appear with different probability in each attribute of queries. In this case, the average response time can be calculated by using the split distance distribution. Then, we calculate the average response time of the allocation method using UEP codes, and we show the effectiveness of this method from numerical examples.
Keyword (in Japanese) (See Japanese page) 
(in English) file allocation / Cartesian product file / partial match query / unequal error protection codes / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 363, IT2010-55, pp. 7-12, Jan. 2011.
Paper # IT2010-55 
Date of Issue 2011-01-11 (IT) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee IT  
Conference Date 2011-01-18 - 2011-01-18 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IT 
Conference Code 2011-01-IT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Disk Allocation Methods for Cartesian Product Files by using Unequal Error Protection Codes 
Sub Title (in English)  
Keyword(1) file allocation  
Keyword(2) Cartesian product file  
Keyword(3) partial match query  
Keyword(4) unequal error protection codes  
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Keyword(6)  
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1st Author's Name Tomohiko Saito  
1st Author's Affiliation Aoyama Gakuin University (Aoyama Gakuin Univ.)
2nd Author's Name Hiroshige Inazumi  
2nd Author's Affiliation Aoyama Gakuin University (Aoyama Gakuin Univ.)
3rd Author's Name Toshiyasu Matsushima  
3rd Author's Affiliation Waseda University (Waseda Univ.)
4th Author's Name Shigeichi Hirasawa  
4th Author's Affiliation Cyber University (Cyber Univ.)
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Speaker Author-1 
Date Time 2011-01-18 11:00:00 
Presentation Time 20 minutes 
Registration for IT 
Paper # IT2010-55 
Volume (vol) vol.110 
Number (no) no.363 
Page pp.7-12 
#Pages 6 
Date of Issue 2011-01-11 (IT) 

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