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, 2013
Filed:
Sep. 07, 2011
Applicant:
Makoto Iwayama, Tokorozawa, JP;
Inventor:
Makoto Iwayama, Tokorozawa, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
To provide a technique for accurately and efficiently generating Boolean search formulas that serve as a basis of similarity search. A Boolean search formula generation apparatus according to the present invention establishes Boolean search formulas expressed in a standard sum of products form connecting products of search terms by a sum and evaluates the Boolean search formulas based on a recall and a precision. The Boolean search formula generation apparatus repeats connecting the products of the search terms with maximum evaluation values by a sum to establish a Boolean search formula.