20. The computer system of claim 19 , wherein the computer readable instructions, when executed by the processing device, cause the processing device to: produce the language understanding model based at least on the intent output information in combination with labels added by at least one human annotator.
19. A computer system comprising: a processing device; and a computer readable storage medium storing computer readable instructions which, when executed by the processing device, cause the processing device to: receive input data, the input data comprising a first set of linguistic items with known intent labels representing known intents and a second set of linguistic items without known intent labels, the known intent labels being obtained or derived from a knowledge resource that represents the known intents as known relations between entities; determine intents for respective linguistic items in the input data to produce intent output information, the intents being determined based at least on the known intent labels and selection log data, the selection loci data reflecting selections made by users in response to submitting linguistic items with the known intents and with new intents that are not represented by the knowledge resource, the new intents representing new relations between individual entities that are not provided by the known relations of the knowledge resource; store the intent output information in a data store, the intent output information including at least one of the new intents that is discovered using the selection log data; and produce a language understanding model based at least on the intent output information.