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POMDP-based dialogue manager adaptation to extended domains
If you have a question about this talk, please contact Rogier van Dalen.
Existing spoken dialogue systems are typically designed to operate in a static and well-defined domain, and are not well suited to tasks in which the concepts and values change dynamically. As a first step in this direction, this talk addresses the problem of automatically extending a dialogue system to include a new previously unseen concept (or slot) which can be then used as a search constraint in an information query. In the context of Gaussian process POMDP optimisation, a domain can be extended through a simple expansion of the kernel and then rapidly adapted. As well as being much quicker, adaptation rather than retraining from scratch is shown to avoid subjecting users to unacceptably poor performance during the learning stage.
This talk is part of the CUED Speech Group Friday Lunchtime Series series.
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