检索国际和国家专利汇编

1. (WO2018142703) ANOMALY FACTOR ESTIMATION DEVICE, ANOMALY FACTOR ESTIMATION METHOD, AND PROGRAM

Pub. No.:    WO/2018/142703    International Application No.:    PCT/JP2017/040090
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Wed Nov 08 00:59:59 CET 2017
IPC: G06F 11/07
G06N 99/00
Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
日本電信電話株式会社
Inventors: IKEDA, Yasuhiro
池田 泰弘
NAKANO, Yusuke
中野 雄介
WATANABE, Keishiro
渡辺 敬志郎
ISHIBASHI, Keisuke
石橋 圭介
KAWAHARA, Ryoichi
川原 亮一
Title: ANOMALY FACTOR ESTIMATION DEVICE, ANOMALY FACTOR ESTIMATION METHOD, AND PROGRAM
Abstract:
This anomaly factor estimation device has: a learning apparatus that has learned first numerical vectors, said first numerical vectors being obtained from an anomaly detection target when the detection target is normal; a detection unit that detects an anomaly in the detection target on the basis of second numerical vectors, said second numerical vectors being obtained from the detection target at a plurality of timings; and a first calculation unit that calculates a value as information for estimating an anomaly factor metric, said value being obtained by, for each metric of a second numerical vector in which an anomaly was detected, subtracting the average of the metric in the first numerical vectors from the value of the metric, and dividing the result by the standard deviation of the metric in the first numerical vectors. Thus, the anomaly factor estimation device supports factor estimation when an anomaly has been detected in the anomaly detection target.