The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 02, 2024

Filed:

Mar. 05, 2021
Applicant:

Fujitsu Limited, Kawasaki, JP;

Inventor:

Shinji Yamashita, Kawasaki, JP;

Assignee:

FUJITSU LIMITED, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 43/16 (2022.01); H04L 43/067 (2022.01); H04L 43/062 (2022.01); H04L 43/0876 (2022.01);
U.S. Cl.
CPC ...
H04L 43/16 (2013.01); H04L 43/062 (2013.01); H04L 43/067 (2013.01); H04L 43/0876 (2013.01);
Abstract

An anomaly detection method executed by a computer, the anomaly detection method includes identifying, for each of target periods, a prediction value to be a reference for determining whether an anomaly occurs in the target period; identifying a corrected prediction value acquired by correcting the prediction value of a first target period based on the prediction value and a measured values of a second target period before the first target period; setting one of the prediction value and the corrected prediction value corresponding to the first target period as an upper limit value and the other as a lower limit value; and determining whether the anomaly occurs in the first target period by using a reference defined by the upper limit value and the lower limit value.


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