Title:
DETERMINATION DEVICE, DETERMINATION METHOD, AND DETERMINATION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/195771
Kind Code:
A1
Abstract:
A determination device (10) comprises a learning unit (122) and a determination unit (123). From a distribution of a quantization error between inputted data and representative vectors of an output layer of an SOM trained via unsupervised learning, said representative vectors being obtained by inputting the data into the SOM, and values of distances of the representative vectors to neighbors, the learning unit (122) derives thresholds of outliers thereof, combines the derived thresholds, and generates a plurality of thresholds. The determination unit (123) inputs vector data subject to determination into the SOM, calculates the quantization error of vector data subject to determination, compares the quantization error with at least any one of the plurality of thresholds, and determines an anomaly of the vector data subject to determination.
Inventors:
IGARASHI YUMINOBU (JP)
Application Number:
PCT/JP2020/010195
Publication Date:
October 01, 2020
Filing Date:
March 10, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G06N3/08; G06F16/906
Foreign References:
| JPH11338848A | 1999-12-10 | |||
| JP2007198918A | 2007-08-09 | |||
| JP2006300895A | 2006-11-02 | |||
| JP2008040684A | 2008-02-21 | |||
| JP2009205558A | 2009-09-10 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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