Title:
ANOMALY DETECTION APPARATUS, ANOMALY DETECTION SYSTEM, AND ANOMALY DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/163352
Kind Code:
A1
Abstract:
An anomaly detection apparatus for detecting data flow anomalies classes a plurality of data flows on the basis of similarity in time series changes in the data amounts of the data flows; calculates a correlation coefficient at a normal time and a correlation coefficient at a certain timing between at least two data flows belonging to the same class; and determines that at least one of the at least two data flows is anomalous when a difference between the correlation coefficient at the normal time and the correlation coefficient at the certain timing is greater than a predetermined threshold.
Inventors:
HASHIMOTO KYOSUKE (JP)
YABUSAKI HITOSHI (JP)
KINOSHITA JUNJI (JP)
YABUSAKI HITOSHI (JP)
KINOSHITA JUNJI (JP)
Application Number:
PCT/JP2016/059330
Publication Date:
September 28, 2017
Filing Date:
March 24, 2016
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H04L12/70
Foreign References:
| JP4112584B2 | 2008-07-02 | |||
| JPH11177549A | 1999-07-02 | |||
| JP2006115129A | 2006-04-27 |
Attorney, Agent or Firm:
WILLFORT INTERNATIONAL PATENT FIRM (JP)
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