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| Presentation | 2008-03-11 17:05 Validity of Sample Measurement in Entropy Measuring Kazuo Ohzeki (SIT)  IE2007-342 PRMU2007-326 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Possibility of re-compression of MPEG coded data is investigated using random number analysis. To obtain N-gram Shannon entropy tends to be difficult as the value N increases. It is difficult to measure the entropy for events with longer bit elements, but it is easy to do so for events with shorter bit elements. It is important to clarify the probability correspondence between two observations for of the same event with elements as the longer bit elements and shortly sampled elements. Using the correspondence of probability, N-gram Shannon entropy with longer bit elements can be estimated from the results of N-gram Shannon entropy with shorter bit elements. Using a several patterns of bit events, correspondences with mean and variance and maximum width of entropy are calculated. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | compression / entropy / sampling / Bayes theorem / coding / analysis / / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 538, IE2007-342, pp. 525-530, March 2008. | |
| Paper # | IE2007-342 | |
| Date of Issue | 2008-03-03 (IE, PRMU) | |
| 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 | IE2007-342 PRMU2007-326 |
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| Conference Information | |
| Committee | PRMU IE |
| Conference Date | 2008-03-10 - 2008-03-11 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | JAIST |
| Paper Information | |
| Registration To | IE |
| Conference Code | 2008-03-PRMU-IE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Validity of Sample Measurement in Entropy Measuring |
| Sub Title (in English) | |
| Keyword(1) | compression |
| Keyword(2) | entropy |
| Keyword(3) | sampling |
| Keyword(4) | Bayes theorem |
| Keyword(5) | coding |
| Keyword(6) | analysis |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Kazuo Ohzeki |
| 1st Author's Affiliation | Shibaura Institute of Technology (SIT) |
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| Speaker | Author-1 |
| Date Time | 2008-03-11 17:05:00 |
| Presentation Time | 30 minutes |
| Registration for | IE |
| Paper # | IE2007-342, PRMU2007-326 |
| Volume (vol) | vol.107 |
| Number (no) | no.538(IE), no.539(PRMU) |
| Page | pp.525-530 |
| #Pages | 6 |
| Date of Issue | 2008-03-03 (IE, PRMU) |
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