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Paper Abstract and Keywords
Presentation 2020-11-06 14:40
Considering the variation of the noise-addition amount in local differential privacy with user trajectory adjacency
Taisho Sasada, Yuzo Taenaka, Youki Kadobayashi, Doudou Fall (NAIST) ISEC2020-39 SITE2020-36 LOIS2020-19
Abstract (in Japanese) (See Japanese page) 
(in English) The detection of clusters in densely populated areas by contact tracing is urgent, because these locations are trajectories represented by a series of latitude and longitude data, and sensitive information can be inferred, which carries a privacy risk, although it is possible to detect clusters with higher accuracy using GPS.
In order to guarantee privacy, there is a local differential privacy policy that adds noise at the data collection stage, but the user cannot control the amount of noise added. The risk tolerance is different for each individual, and the amount of noise addition must be dynamically changed according to the user's trajectory. Therefore, in this study, we vary the amount of noise addition according to the risk of privacy leakage considering the trajectory adjacency of the user.
Keyword (in Japanese) (See Japanese page) 
(in English) Local Differential Privacy / Trajectory Adjacency / Cluster Detection / / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 224, ISEC2020-39, pp. 45-50, Nov. 2020.
Paper # ISEC2020-39 
Date of Issue 2020-10-30 (ISEC, SITE, LOIS) 
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 ISEC2020-39 SITE2020-36 LOIS2020-19

Conference Information
Committee LOIS ISEC SITE  
Conference Date 2020-11-06 - 2020-11-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2020-11-LOIS-ISEC-SITE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Considering the variation of the noise-addition amount in local differential privacy with user trajectory adjacency 
Sub Title (in English)  
Keyword(1) Local Differential Privacy  
Keyword(2) Trajectory Adjacency  
Keyword(3) Cluster Detection  
1st Author's Name Taisho Sasada  
1st Author's Affiliation Nara Institute of Science and Technology (NAIST)
2nd Author's Name Yuzo Taenaka  
2nd Author's Affiliation Nara Institute of Science and Technology (NAIST)
3rd Author's Name Youki Kadobayashi  
3rd Author's Affiliation Nara Institute of Science and Technology (NAIST)
4th Author's Name Doudou Fall  
4th Author's Affiliation Nara Institute of Science and Technology (NAIST)
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Date Time 2020-11-06 14:40:00 
Presentation Time 25 
Registration for ISEC 
Paper # IEICE-ISEC2020-39,IEICE-SITE2020-36,IEICE-LOIS2020-19 
Volume (vol) IEICE-120 
Number (no) no.224(ISEC), no.225(SITE), no.226(LOIS) 
Page pp.45-50 
#Pages IEICE-6 
Date of Issue IEICE-ISEC-2020-10-30,IEICE-SITE-2020-10-30,IEICE-LOIS-2020-10-30 

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