A Chinese spoken dialog system for blind men

This paper introduces a Chinese spoken dialog system providing services for blind people through which. they can use computers. A description of the architecture of the dialog system is presented briefly and the way in which each component works is also explained. The key factor of such a dialog system is extraction of the intention of a user´s utterance so as to make an appropriate response. To achieve this, a case grammar formalism was applied for semantic description and a robust spoken language parsing method based on case-frames was adopted to obtain the semantic interpretation of the input. It shows that this parsing method can tolerate errors of speech recognition and grammatical deviation of spoken language to some extent