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Paper Abstract and Keywords
Presentation 2011-03-29 11:20
Information Geometry of Input-Output Tables
Ryoko Morioka (AIST), Koji Tsuda (AIST/JST) IBISML2010-127
Abstract (in Japanese) (See Japanese page) 
(in English) A input-output (IO) table is a fundamental tool in macro economics that summarizes the transactions among industrial sections. We apply the information geometry to IO tables for analyzing latent changes in economic structures. A prominent feature of information geometry is that it allows us to decompose a distribution or measure hierarchically into several levels of statistics. Using orthogonal foliation, an IO table is decomposed into a vector of marginal sums and an interaction matrix. In experiments with 1970-2006 IO tables of Japanese economy, it is shown that structural changes are better observable in the interaction matrices than the original IO tables. In addition, we derive a new interpolation method of IO tables, which is considered as more appropriate than RAS in that it can take into account structural changes.
Keyword (in Japanese) (See Japanese page) 
(in English) Information geometry / Input-output tables / RAS / / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 476, IBISML2010-127, pp. 161-167, March 2011.
Paper # IBISML2010-127 
Date of Issue 2011-03-21 (IBISML) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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 IBISML2010-127

Conference Information
Committee IBISML  
Conference Date 2011-03-28 - 2011-03-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Nakanoshima Center, Osaka Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Text and Web mining, etc. 
Paper Information
Registration To IBISML 
Conference Code 2011-03-IBISML 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Information Geometry of Input-Output Tables 
Sub Title (in English)  
Keyword(1) Information geometry  
Keyword(2) Input-output tables  
Keyword(3) RAS  
1st Author's Name Ryoko Morioka  
1st Author's Affiliation National Institute of Advanced Industrial Science and Technology (AIST)
2nd Author's Name Koji Tsuda  
2nd Author's Affiliation National Institute of Advanced Industrial Science and Technology/JST-ERATO (AIST/JST)
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Speaker Author-1 
Date Time 2011-03-29 11:20:00 
Presentation Time 20 minutes 
Registration for IBISML 
Paper # IBISML2010-127 
Volume (vol) vol.110 
Number (no) no.476 
Page pp.161-167 
Date of Issue 2011-03-21 (IBISML) 

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