Alarm noise reduction method based on time domain and graph domain characteristics in alarm storm period

The invention discloses an alarm noise reduction method based on time domain and graph domain characteristics during an alarm storm, and the method comprises the following steps: S1, calculating the emergency degree of an alarm, and dividing the alarm into a conventional alarm and an emergency alarm according to the emergency degree; s2, monitoring the number of the sudden alarms and the number of topological nodes corresponding to the sudden alarms, and judging whether an alarm storm is triggered according to a monitored number result; s3, calculating node importance of a topological node corresponding to the sudden alarm in the alarm storm; and S4, performing node compression according to the upstream node topology coincidence degree of the node where the emergency alarm is located and the node importance, and obtaining an event after alarm noise reduction. According to the method, the alarm storm can be found, the noise alarms frequently appearing in the history can be filtered out, the residual alarms are