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1. (WO2015122403) ANONYMIZATION INDEX CALCULATION SYSTEM

Pub. No.:    WO/2015/122403    International Application No.:    PCT/JP2015/053627
Publication Date: Fri Aug 21 01:59:59 CEST 2015 International Filing Date: Wed Feb 11 00:59:59 CET 2015
IPC: G06Q 50/22
G06F 21/62
G06Q 50/24
Applicants: KABUSHIKI KAISHA TOSHIBA
株式会社 東芝
TOSHIBA SOLUTIONS CORPORATION
東芝ソリューション株式会社
Inventors: KOIKE, Masanobu
小池 正修
OSOTKRAPHUN, Pakin
オソトクラパヌン パキン
SANO, Fumihiko
佐野 文彦
IKEGAMI, Michiyo
池上 美千代
KASEDA, Yuuki
綛田 佑樹
Title: ANONYMIZATION INDEX CALCULATION SYSTEM
Abstract:
Te anonymization index calculation system (100) according to an embodiment calculates an anonymization index including the degree of anonymization and the degree of data addition. The anonymization index calculation system comprises a data storage means (110), an anonymization means (120), an anonymization degree calculation means (130), and an addition degree calculation means (131). The data storage means stores source data including a value for each item for each individual. The anonymization means generates anonymization data from the source data by anonymizing values for some items in the source data. The anonymization degree calculation means calculates the anonymization degree indicating the degree of anonymization, on the basis of the anonymization data and the source data. The addition degree calculation means calculates the degree of data addition, corresponding to the probability of anonymization data being generated from the source data.