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:
Nov. 22, 2022
Filed:
Oct. 09, 2018
Nippon Telegraph and Telephone Corporation, Chiyoda-ku, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Chiyoda-ku, JP;
Abstract
A k-anonymization device includes: a list creation unitthat creates, based on generalization hierarchies about attribute values of attributes of a database, lists of values, each being obtained by generalizing each attribute value of each attribute of the database to each generalization level of the corresponding generalization hierarchy, and codes representing the values; a search unitthat searches for a node with k-anonymity of a lattice structure in parallel by determining whether a generalized database obtained by generalizing the database to generalization levels corresponding to each node of the lattice structure has k-anonymity based on the generalized database represented by the codes, which is obtained by referring to the created lists; and an output unitthat outputs a generalized database obtained by generalizing the database to generalization levels corresponding to a node with k-anonymity, which was found by the search, of the lattice structure.