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1. (WO2018180197) DATA ANALYSIS DEVICE, DATA ANALYSIS METHOD AND DATA ANALYSIS PROGRAM

Pub. No.:    WO/2018/180197    International Application No.:    PCT/JP2018/008007
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sat Mar 03 00:59:59 CET 2018
IPC: G06F 17/30
G06N 99/00
Applicants: NEC CORPORATION
日本電気株式会社
Inventors: KATO Kyoko
加藤 京子
Title: DATA ANALYSIS DEVICE, DATA ANALYSIS METHOD AND DATA ANALYSIS PROGRAM
Abstract:
A data analysis device 10 comprises: a frequency analysis unit 11 that performs frequency analysis, under a prescribed condition, on each piece of a plurality of learning data pieces including a plurality of class learning data pieces some of which have been assigned a label indicating the data class; a cluster analysis unit 12 that clusters the frequency analyzed learning data pieces into a number of classes of frequency analyzed learning data; a calculation unit 13 that calculates, on the basis of the clusters, the degree to which frequency analyzed learning data pieces assigned the same label are not included in the same cluster; and a selection unit 14 that selects, as a clustering model for assigning a label to a learning data piece, clustering results according to the cluster analysis unit 12 when the smallest degree was calculated, from among the plurality of degrees calculated when the frequency analysis unit 11 performed frequency analysis of the each of the plurality of class learning data pieces under a plurality of conditions.