System and method of providing an automated data-collection in spoken dialog systems

摘要

The invention relates to a system and method for gathering data for use in a spoken dialog system. An aspect of the invention is generally referred to as an automated hidden human that performs data collection automatically at the beginning of a conversation with a user in a spoken dialog system. The method comprises presenting an initial prompt to a user, recognizing a received user utterance using an automatic speech recognition engine and classifying the recognized user utterance using a spoken language understanding module. If the recognized user utterance is not understood or classifiable to a predetermined acceptance threshold, then the method re-prompts the user. If the recognized user utterance is not classifiable to a predetermined rejection threshold, then the method transfers the user to a human as this may imply a task-specific utterance. The received and classified user utterance is then used for training the spoken dialog system.

主权项

1. A method comprising:
training a spoken dialog system using task-independent call-types of a previous application; recognizing a user utterance using the spoken dialog system, to yield a recognized user utterance; determining a rejection threshold based on an entity referenced in the recognized user utterance; comparing a classification of the recognized user utterance to the rejection threshold, to yield a comparison; and when the comparison indicates the recognized user utterance meets the rejection threshold, transcribing the recognized user utterance and using the recognized user utterance for further training of the spoken dialog system.