METHODS AND DEVICES FOR NETWORK MONITORING

A device for providing training data to a classifier for monitoring a network of resource instances is disclosed. Resource instances are organized according to a topology, have respective resource types and may generate alarms having alarm types. The device comprises means (1501, 1502) for obtaining a first alarm dependency structure, ADS, (400) comprising dependencies (401) between alarms, means (103) for summarizing the ADS, and means (103) for providing classifier training data comprising an ADS network state class and the summarized alarm dependency structure, SADS, resulting from said assigning, replacing and merging. Also disclosed is a device for monitoring a network - this device comprises means for obtaining an ADS, summarizing an ADS and obtaining a network state class from a classifier based on the summarized ADS. Methods corresponding to both devices are also disclosed.