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Paper Abstract and Keywords
Presentation 2018-03-08 13:50
Optimal Coded Caching using Linear Programming
Shota Kamiya, Hiroki Koga (Univ. Tsukuba) IT2017-112 ISEC2017-100 WBS2017-93
Abstract (in Japanese) (See Japanese page) 
(in English) Caching is a method of reducing the network traffic by prefetching some part of contents into memories of users. In this paper we consider the caching problem with nonuniform file demands where $K$ users in a cach network request one of $N$ files subject to an identical distribution that is not required to be uniform. We succeeds in obtaining the optimal coded caching system for the cases of $(N,K)=(2,3)$. We first optimize the joint entropy subject to certain constraints. Reducing the numbers of the variable and the constraints is essential in such numerical optimization. Next we try construct that attain the minimum of the joint entropy. We show that a new code can be constructed from this approach.
Keyword (in Japanese) (See Japanese page) 
(in English) coded caching / caching scheme / linear programming / nonuniform demands / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 487, IT2017-112, pp. 55-60, March 2018.
Paper # IT2017-112 
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 IT2017-112 ISEC2017-100 WBS2017-93

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) Optimal Coded Caching using Linear Programming 
Sub Title (in English)  
Keyword(1) coded caching  
Keyword(2) caching scheme  
Keyword(3) linear programming  
Keyword(4) nonuniform demands  
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1st Author's Name Shota Kamiya  
1st Author's Affiliation University of Tsukuba (Univ. Tsukuba)
2nd Author's Name Hiroki Koga  
2nd Author's Affiliation University of Tsukuba (Univ. Tsukuba)
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Speaker Author-1 
Date Time 2018-03-08 13:50:00 
Presentation Time 25 minutes 
Registration for IT 
Paper # IT2017-112, ISEC2017-100, WBS2017-93 
Volume (vol) vol.117 
Number (no) no.487(IT), no.488(ISEC), no.489(WBS) 
Page pp.55-60 
#Pages 6 
Date of Issue 2018-03-01 (IT, ISEC, WBS) 

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