Title:
ANOMALY DETECTION DEVICE, ANOMALY DETECTION METHOD, AND COMPUTER-READABLE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2020/170425
Kind Code:
A1
Abstract:
An anomaly detection device (1) according to one aspect of the present invention comprises a global tree structure creation unit (11) that creates a global tree structure for dividing a plurality of items of data into a plurality of groups, a local tree structure creation unit (12) that creates a local tree structure for further dividing, in each of the plurality of groups, the items of data divided into each of the plurality of groups, and a score calculation unit (13) that uses the depth of a leaf node from the root node of the local tree structure to calculate a score indicating the degree of anomalies in the plurality of items of data.
Inventors:
IKEDA SATOSHI (JP)
Application Number:
PCT/JP2019/006790
Publication Date:
August 27, 2020
Filing Date:
February 22, 2019
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G06F16/00
Foreign References:
| JP2019020124A | 2019-02-07 | |||
| US10045218B1 | 2018-08-07 | |||
| US20170199902A1 | 2017-07-13 |
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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