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| Presentation | 2021-05-27 09:30 Retraining method of signal strength based model for indoor positioning Masaaki Yamamoto, Hiroyuki Kuriyama, Kenji Nagamatsu (Hitachi)  SeMI2021-1 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Covid-19 is continuing to spread around the world. Office workers therefore work in several sites to balance work and prevetation of its. A positioning system for estimating worker’s positions is attracting considerable attention. Given this background, we propose a machine-learning based positioning method. In this method, a positioning model is generated from the training data measured by smartphones. The model estimates a worker’s position from the test data measrured by worker’s smartphone. When the training data and the test data were measured by using different types of smartphones, a positioning error increased. In addition, a different holding state of smartphone increased the error, too. To reduce the error, we propose a method to update the training data according to the holding states and the types of smartphones.The evaluation of the proposed method was done with RMSE (Root Mean Square Error) as a metric. When using different holding states and the type of smartphone, RMSE of the method was reduced to 2.6 to 3.0m. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Indoor positioning / Signal Strength / Retraining / Smartphone / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 41, SeMI2021-1, pp. 1-4, May 2021. | |
| Paper # | SeMI2021-1 | |
| Date of Issue | 2021-05-20 (SeMI) | |
| ISSN | 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 | SeMI2021-1 |
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| Conference Information | |
| Committee | SeMI IPSJ-MBL IPSJ-DPS IPSJ-ITS |
| Conference Date | 2021-05-27 - 2021-05-28 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | SeMI |
| Conference Code | 2021-05-SeMI-MBL-DPS-ITS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Retraining method of signal strength based model for indoor positioning |
| Sub Title (in English) | |
| Keyword(1) | Indoor positioning |
| Keyword(2) | Signal Strength |
| Keyword(3) | Retraining |
| Keyword(4) | Smartphone |
| Keyword(5) | |
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| Keyword(8) | |
| 1st Author's Name | Masaaki Yamamoto |
| 1st Author's Affiliation | Hitachi, Ltd. (Hitachi) |
| 2nd Author's Name | Hiroyuki Kuriyama |
| 2nd Author's Affiliation | Hitachi, Ltd. (Hitachi) |
| 3rd Author's Name | Kenji Nagamatsu |
| 3rd Author's Affiliation | Hitachi, Ltd. (Hitachi) |
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| Speaker | Author-1 |
| Date Time | 2021-05-27 09:30:00 |
| Presentation Time | 20 minutes |
| Registration for | SeMI |
| Paper # | SeMI2021-1 |
| Volume (vol) | vol.121 |
| Number (no) | no.41 |
| Page | pp.1-4 |
| #Pages | 4 |
| Date of Issue | 2021-05-20 (SeMI) |
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