Patent ID: 11876818
Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 13:
14. An anomaly detection device, comprising:
a processor; and
a memory including a program that, when executed by the processor, causes the processor to:
calculate, for a detection target data stream made up of a plurality of detection target data that are consecutive, a plurality of distances between the plurality of detection target data;
extract a plurality of features of the detection target data stream using the plurality of distances; and
calculate anomaly degree information about a degree of anomaly in the detection target data stream using the plurality of features, wherein

the processor extracts the plurality of features each made up of L consecutive distances among the plurality of distances, wherein L is an integer greater than or equal to 2, and
the processor calculates supplementary information for each of the plurality of features, using a difference in the feature, and calculates the anomaly degree information for each of one or more information calculation target windows made up of N detection target data among the plurality of detection target data, using all items of supplementary information calculated from the N detection target data, wherein the supplementary information is used to calculate the anomaly degree information, wherein N is an integer greater than or equal to L+1.