The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2024
Filed:
Oct. 04, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Satoshi Hasegawa, Musashino, JP;
Takayuki Miura, Musashino, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
An identification-estimation risk assessment apparatus includes a first calculation unit for calculating a first value ΣPr[Δ(t)=t'oγ], which is a sum related to all shuffles of a probability Pr[Δ(t)=t′oγ] that a table Δ(t) obtained by anonymizing the original table t through randomization Δ coincides with a table t′oγ represented as a composite of a shuffle γ and the anonymized table t′; a second calculation unit for calculating a second value ΣPr[Δ(t)=t′oγ], which is a sum related to a shuffle that satisfies γ(r)=r′ of the probability Pr[Δ(t)=t′oγ]; and a third calculation unit for calculating a third value ΣPr[Δ(t)=t′oγ]/ΣPr[Δ(t)=t′oγ] as a risk assessment value of a risk that a record number r is identified and estimated as corresponding to a record number r′, based on the first value and the second value.