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:
Apr. 30, 2024
Filed:
Apr. 24, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Kazuo Aoyama, Tokyo, JP;
Takashi Hattori, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
A clustering device includes a storage means configured to store a transposed file including array elements in a storage unit, the array elements storing a pair in which a cluster identifier and a first non-zero feature quantity of a mean feature vector are associated with each feature identifier, a calculation means configured to calculate a distance between the object feature vector in sparse representation indicating the object feature vector in a pair in which a second non-zero feature quantity of the object feature vector and a feature identifier of the second non-zero feature quantity are associated with each other, and the mean feature vector of each cluster, and an assignment means configured to assign the object feature vector to one of the plurality of clusters on the basis of the distance, and the calculation means calculates a product of a second non-zero feature quantity and a first non-zero feature quantity stored in an array element of an index based on a feature identifier corresponding to the second non-zero feature quantity among array elements constituting the transposed file, to calculate an inner product necessary for the calculation of the distance.