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:
Feb. 11, 2025
Filed:
Sep. 02, 2020
Nec Corporation, Tokyo, JP;
Yuyang Dong, Tokyo, JP;
Masafumi Oyamada, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A coupling table search deviceincludes: input meansthat receives an input of a coupling index from a coupling index storage unit; search plan generation meansthat calculates, for each coupling index, the number of results that is the number of couplable record pairs estimated in a case where a record in a target column is found using the coupling index for each similarity function, and generates a search plan that defines a use order of the coupling index in descending order of the calculated number of results; and record search meansthat searches for a record in the target column by using the coupling index in the order defined in the search plan, and specifies the external table in which records whose number is equal to or larger than a predetermined threshold have been found as a coupling table.