Title:
ANONYMIZER DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/093522
Kind Code:
A1
Abstract:
An objective of the present invention is to allow comparison of quantities of data between groups. An anonymizer device queries a user information storage unit wherein data including user information is stored, and detects a singularity group, which is a group which fails to satisfy a prescribed anonymity index when data of a plurality of users is grouped on the basis of the user information. The anonymizer device acquires data from each group other than the singularity group, generalizes the user information together with the data of the singularity group to a common value, and selects acquired data, which is acquired from each group on the basis of prescribed rules according to the anonymity index, such that all groups satisfy the anonymity index. The anonymizer device generates anonymized data by generalizing the data of the singularity group and the acquired data to a common user information value, and stores the anonymized data in an anonymized user information storage unit together with the data other than the acquired data of each group other than the singularity group.
Inventors:
TOYODA YUKI (JP)
ITO NAOKO (JP)
ITO NAOKO (JP)
Application Number:
PCT/JP2011/076271
Publication Date:
July 12, 2012
Filing Date:
November 15, 2011
Export Citation:
Assignee:
NEC CORP (JP)
TOYODA YUKI (JP)
ITO NAOKO (JP)
TOYODA YUKI (JP)
ITO NAOKO (JP)
International Classes:
G06F17/30; G06F21/62
Other References:
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MASARU IGARASHI ET AL.: "k-Tokumeisei no Kakuritsuteki Shihyo eno Kakucho to sono Tekiyorei", COMPUTER SECURITY SYMPOSIUM 2009 RONBUNSHU, vol. 2009, no. 11, 19 October 2009 (2009-10-19), pages 763 - 768
KUNIHIKO HARADA ET AL.: "k-anonymization schemes with automatic generation of generalization trees and distortion measuring using information entropy", IPSJ SIG NOTES HEISEI 22 NENDO (2), 15 August 2010 (2010-08-15), pages 1 - 7
KEIICHI HIROTA ET AL.: "Development and Evaluation of Personal Data Anonymization Platform in Information Grand Voyage Project", IPSJ SIG NOTES HEISEI 22 NENDO (2), 15 August 2010 (2010-08-15), pages 1 - 12
YUKI TOYODA ET AL.: "Hikaku Kano na Tokumeika Group o Seisei suru Tokumeika Shuho no Teian", DAI 73 KAI (HEISEI 23 NEN) ZENKOKU TAIKAI KOEN RONBUNSHU (3), INFORMATION PROCESSING SOCIETY OF JAPAN, 2 March 2011 (2011-03-02), pages 3-441 - 3-442
YUKI TOYODA ET AL.: "An anonymization method allowing the comparison of the numbers of records in anonymized groups", COMPUTER SECURITY SYMPOSIUM 2011, vol. 2011, no. 3, 12 October 2011 (2011-10-12), pages 432 - 437, XP008173270
JIUYONG LI ET AL.: "Anonymization by Local Recoding in Data with Attribute Hierarchical Taxonomies", IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING, vol. 20, no. 9, pages 1181 - 1194, XP011225921, DOI: doi:10.1109/TKDE.2008.52
YU JUAN ET AL.: "TopDown-KACA: an Efficient Local-recoding Algorithm for k-anonymity", IEEE INTERNATIONAL CONFERENCE ON GRANULAR COMPUTING, 2009, GRC'09, 19 August 2009 (2009-08-19), pages 727 - 732, XP031530268
ARISTIDES GIONIS ET AL.: "k-Anonymization Revisited", IEEE 24TH INTERNATIONAL CONFERENCE ON DATA ENGINEERING, 2008, ICDE 2008, 12 April 2008 (2008-04-12), pages 744 - 753, XP031246032
BENJAMIN C. M. FUNG ET AL.: "Privacy-Preserving Data Publishing: A Survey of Recent Developments,ACM Computing Surveys (CSUR)", ACM DIGITAL LIBRARY, vol. 42, no. 4, 4 June 2010 (2010-06-04), NEW YORK, NY, pages 14.1 - 14.53
MASARU IGARASHI ET AL.: "k-Tokumeisei no Kakuritsuteki Shihyo eno Kakucho to sono Tekiyorei", COMPUTER SECURITY SYMPOSIUM 2009 RONBUNSHU, vol. 2009, no. 11, 19 October 2009 (2009-10-19), pages 763 - 768
KUNIHIKO HARADA ET AL.: "k-anonymization schemes with automatic generation of generalization trees and distortion measuring using information entropy", IPSJ SIG NOTES HEISEI 22 NENDO (2), 15 August 2010 (2010-08-15), pages 1 - 7
KEIICHI HIROTA ET AL.: "Development and Evaluation of Personal Data Anonymization Platform in Information Grand Voyage Project", IPSJ SIG NOTES HEISEI 22 NENDO (2), 15 August 2010 (2010-08-15), pages 1 - 12
YUKI TOYODA ET AL.: "Hikaku Kano na Tokumeika Group o Seisei suru Tokumeika Shuho no Teian", DAI 73 KAI (HEISEI 23 NEN) ZENKOKU TAIKAI KOEN RONBUNSHU (3), INFORMATION PROCESSING SOCIETY OF JAPAN, 2 March 2011 (2011-03-02), pages 3-441 - 3-442
YUKI TOYODA ET AL.: "An anonymization method allowing the comparison of the numbers of records in anonymized groups", COMPUTER SECURITY SYMPOSIUM 2011, vol. 2011, no. 3, 12 October 2011 (2011-10-12), pages 432 - 437, XP008173270
JIUYONG LI ET AL.: "Anonymization by Local Recoding in Data with Attribute Hierarchical Taxonomies", IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING, vol. 20, no. 9, pages 1181 - 1194, XP011225921, DOI: doi:10.1109/TKDE.2008.52
YU JUAN ET AL.: "TopDown-KACA: an Efficient Local-recoding Algorithm for k-anonymity", IEEE INTERNATIONAL CONFERENCE ON GRANULAR COMPUTING, 2009, GRC'09, 19 August 2009 (2009-08-19), pages 727 - 732, XP031530268
ARISTIDES GIONIS ET AL.: "k-Anonymization Revisited", IEEE 24TH INTERNATIONAL CONFERENCE ON DATA ENGINEERING, 2008, ICDE 2008, 12 April 2008 (2008-04-12), pages 744 - 753, XP031246032
BENJAMIN C. M. FUNG ET AL.: "Privacy-Preserving Data Publishing: A Survey of Recent Developments,ACM Computing Surveys (CSUR)", ACM DIGITAL LIBRARY, vol. 42, no. 4, 4 June 2010 (2010-06-04), NEW YORK, NY, pages 14.1 - 14.53
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
Yoshiyuki Inaba (JP)
Yoshiyuki Inaba (JP)
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