METHOD, DEVICE, PROGRAM AND RECORDING MEDIUM OF DETECTING ABNORMALITY BY DETECTING CHANGE IN COMMUNICATION RELATION STRUCTURE

摘要

PROBLEM TO BE SOLVED: To detect change on a time series of a connection relation structure between a start point and an end point of traffic.

SOLUTION: A traffic data acquisition unit 111 acquires information between the start point and the end point of the traffic for every fixed time interval. A communication relation structure extraction unit 112 creates communication relation structures from the information of the start point and the end point of the traffic for the fixed time interval acquired by the traffic data acquisition unit 111. A distance calculation unit 113 between the communication relation structures, calculates a distance between communication relation structures created by the communication relation structure extraction unit 112. An abnormality detecting unit in communication relation structure 114 detects abnormality based on a difference of distances of the communication relation structure and a reference communication relation structure of a certain period using distances calculated by the distance calculation unit 113 between the communication relation structures. An abnormality cause specifying unit in communication relation structure 115 specifies the start point and/or the end point which become the abnormality cause about the communication relation structure in which the abnormality is detected by the communication relation structure abnormality detection unit 114.

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