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. 10, 2025
Filed:
Mar. 17, 2021
Hitachi, Ltd., Tokyo, JP;
Akira Ioku, Tokyo, JP;
Hideki Hayashi, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
The present invention enables, according to a situation, accurate extraction of related expressions pertaining to search queries and question sentences. A related expression extraction devicereceives input of text data, performs at least one of categorization of the received text data and determination of a structural pattern of the text data, determines, based on a result of at least one of the categorization of the text data and the determination of the structural pattern of the text data, which of a plurality of comparative assessment modelsandis used to extract related expression group data, and extracts a related expression related to content of the text data from the related expression group datausing the determined comparative assessment modelsand