A processing unit can operate an end-to-end recurrent neural network (RNN) with limited contextual dialogue memory that can be jointly trained by supervised signals-user slot tagging, intent prediction and/or system action prediction. The end-to-end RNN, or joint model has shown advantages over separate models for natural language understanding (NLU) and dialogue management and can capture expressive feature representations beyond conventional aggregation of slot tags and intents, to mitigate effects of noisy output from NLU. The joint model can apply a supervised signal from system actions to refine the NLU model. By back-propagating errors associated with system action prediction to the NLU model, the joint model can use machine learning to predict user intent, and perform slot tagging, and make system action predictions based on user input, e.g., utterances across a number of domains.
JOINT LANGUAGE UNDERSTANDING AND DIALOGUE MANAGEMENT