Title:
クラスタリング装置、クラスタリング方法及びプログラム
Document Type and Number:
Japanese Patent JP7070093
Kind Code:
B2
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.
Inventors:
Isao Aoyama
Hattori Masatsugu
Hattori Masatsugu
Application Number:
JP2018100870A
Publication Date:
May 18, 2022
Filing Date:
May 25, 2018
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G06F16/906; G06F17/16
Domestic Patent References:
| JP2015138462A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Ryuji Ishihara
Tadahiko Ito
Ryuji Ishihara
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