Spoken Dialog System Architecture. Joshua Gordon CS4706. Outline. Examples of deployed and research SDS architectures / conversational speech interfaces Discussion of the issues and challenges in SDS design
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Where we are: most of today’s production systems are designed for database access and call routing
Current research at Microsoft: SDS architectures are beginning to incorporate multimodal input
“How may I help you? I can provide directoryassistance, and directions around campus.”
SDS architectures are exploring multimodal output (including gesturing and facial expression) to indicate level of understanding
Next generation systems explore ambitious domains
User: Fly to the red house and photograph the area.
System: OK, I am preparing to take off.
Speech aware appliances are beginning to engage in limited dialogs
Pipeline format, subsequent layers increase abstraction.
Signals to words, words to concepts, concepts to actions
(*THANKS *good bye)
(thank you *VERY_MUCH)
Database search with noisy ASR queries
“The Language of Issa Come Wars”
Goal is to avoid non-understanding cascades – the farther the dialog gets off track, the more difficult it is to recover