Patent ID: 7890483

Claim:
A method of outputting an alert indicating that an unauthorized event has occurred, the method comprising: obtaining a status from a sensor; retrieving personnel information comprising identity and status information for personnel from a database, the personnel information relating to the sensor; generating the alert; applying a filter to determine whether to modify a severity of the alert; evaluating the severity of the alert to generate a modified alert severity S mod when it is determined to modify the severity of the alert; and outputting the alert; wherein S mod =S 0 +(G*N same )+(H*N adjacent )−(I*(1−C(t)); S 0 is a preset severity associated with the alert; G, H, and I are preset constants; N same is a number of alerts in an access zone within a preset time window; N adjacent is a number of alerts in access zones adjacent to the access zone within the preset time window; and C(t) is a certainty associated with the alert at a time t.