11. One or more computer-readable storage devices or memory devices comprising device-readable instructions which, when executed by one or more processing devices, cause the one or more processing devices to perform acts comprising: identifying phrases in support tickets, wherein the support tickets include text describing troubleshooting steps taken by one or more network engineers to resolve one or more network problems; mapping the phrases in the support tickets to specific phrase classes, the specific phrase classes including an entity phrase class for phrases identifying network devices and an action phrase class for phrases identifying actions taken on the network devices; identifying sequences of the entity phrase class and the action phrase class in the text of the support tickets; inferring that the actions were taken on the network devices based on the identified sequences of the entity phrase class and the action phrase class in the text of the support tickets; and providing a user interface with representations of the actions that were taken on the network devices.
11. One or more computer-readable storage devices or memory devices comprising device-readable instructions which, when executed by one or more processing devices, cause the one or more processing devices to perform acts comprising: identifying phrases in support tickets, wherein the support tickets include text describing troubleshooting steps taken by one or more network engineers to resolve one or more network problems; mapping the phrases in the support tickets to specific phrase classes, the specific phrase classes including an entity phrase class for phrases identifying network devices and an action phrase class for phrases identifying actions taken on the network devices; identifying sequences of the entity phrase class and the action phrase class in the text of the support tickets; inferring that the actions were taken on the network devices based on the identified sequences of the entity phrase class and the action phrase class in the text of the support tickets; and providing a user interface with representations of the actions that were taken on the network devices. 14. The one or more computer-readable storage devices or memory devices according to claim 11 , wherein: the specific phrase classes include a condition phrase class for phrases describing problem conditions of the network devices, the identifying the sequences comprises identifying other sequences of the condition phrase class and the entity phrase class in the text of the support tickets, and the inferring comprises inferring that the text of the support tickets indicates that the network devices experienced the problem conditions.