COMMUNICATION MONITORING SYSTEM, DEGREE-OF-IMPORTANCE CALCULATION DEVICE AND CALCULATION METHOD THEREOF, PRESENTATION DEVICE, AND RECORDING MEDIUM IN WHICH COMPUTER PROGRAM IS STORED

摘要

The present invention provides a degree-of-importance calculation device, etc., with which it is possible to present an alert indicating network abnormality to an operator so as to enable the operator to determine the alert more efficiently. A degree-of-importance calculation device 1 is provided with a degree-of-importance calculation unit 2 which, when a first alert is issued due to an abnormality being detected in a communication network 51 to be monitored, determines a degree of importance with respect to the first alert on the basis of a feature included in communication information that is the cause of the first alert and not included in communication information pertaining to one or a plurality of second alerts issued in the past earlier than the first alert.