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Paper Abstract and Keywords
Presentation 2012-07-19 15:00
A Fast Privacy-Preserving Collaborative Filtering Scheme with Transferring Statistical Value
Toru Nakamura, Shinsaku Kiyomoto, Ryu Watanabe, Yutaka Miyake (KDDI R&D Labs) ISEC2012-23 SITE2012-19 ICSS2012-25 EMM2012-15
Abstract (in Japanese) (See Japanese page) 
(in English) The goal of this study is to provide more accurate recommendation to
users with sharing user information among service providers. However,
user information such as users' ratings of items is related to user
privacy, hence it should not be shared.There are some existing work to prevent revealing the original ratings based on cryptographic techniques or perturvative techniques. However, these approaches have drawbacks such as huge computation cost or deterioration of accuracy. This paper proposes fast collaborative filtering algorithms, in which database servers transfer some statistical values to another server in order to improve the accuracy of recommendation. It is difficult to calculate the original ratings from the statistical values. The algorithms are based on the Slope One algorithm.This paper evaluates the accuracies and the communication complexities of the algorithms. In addition, this paper discusses the difficulty of calculating any information related to original ratings from the statistical values.
Keyword (in Japanese) (See Japanese page) 
(in English) Collaborative filtering / Privacy protection / Slope One / / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 128, ICSS2012-25, pp. 97-102, July 2012.
Paper # ICSS2012-25 
Date of Issue 2012-07-12 (ISEC, SITE, ICSS, EMM) 
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF ISEC2012-23 SITE2012-19 ICSS2012-25 EMM2012-15

Conference Information
Conference Date 2012-07-19 - 2012-07-20 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Security 
Paper Information
Registration To ICSS 
Conference Code 2012-07-EMM-ISEC-SITE-ICSS-CSEC-SPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Fast Privacy-Preserving Collaborative Filtering Scheme with Transferring Statistical Value 
Sub Title (in English)  
Keyword(1) Collaborative filtering  
Keyword(2) Privacy protection  
Keyword(3) Slope One  
1st Author's Name Toru Nakamura  
1st Author's Affiliation KDDI R&D Laboratories Inc. (KDDI R&D Labs)
2nd Author's Name Shinsaku Kiyomoto  
2nd Author's Affiliation KDDI R&D Laboratories Inc. (KDDI R&D Labs)
3rd Author's Name Ryu Watanabe  
3rd Author's Affiliation KDDI R&D Laboratories Inc. (KDDI R&D Labs)
4th Author's Name Yutaka Miyake  
4th Author's Affiliation KDDI R&D Laboratories Inc. (KDDI R&D Labs)
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Date Time 2012-07-19 15:00:00 
Presentation Time 25 
Registration for ICSS 
Paper # IEICE-ISEC2012-23,IEICE-SITE2012-19,IEICE-ICSS2012-25,IEICE-EMM2012-15 
Volume (vol) IEICE-112 
Number (no) no.126(ISEC), no.127(SITE), no.128(ICSS), no.129(EMM) 
Page pp.97-102 
#Pages IEICE-6 
Date of Issue IEICE-ISEC-2012-07-12,IEICE-SITE-2012-07-12,IEICE-ICSS-2012-07-12,IEICE-EMM-2012-07-12 

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