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:
Jun. 24, 2025
Filed:
Feb. 20, 2020
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Satoshi Hasegawa, Musashino, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
A data replacement apparatus that can perform microaggregation of large-scale data at high speed using only a primary storage device of a small capacity. The data replacement apparatus includes an attribute value set retrieval unit that retrieves a grouped attribute value set into a primary storage device when a size of the grouped attribute value set is equal to or smaller than a predefined size and retrieves the grouped attribute value set into a secondary storage device when the size of the grouped attribute value set is larger than the predefined size. Further, there is a median computation unit that computes a median of the grouped attribute value set at the primary storage device or at the secondary storage device and a division determination unit that sets respective ones of the two attribute value sets formed by the division as new groups.