CUED Publications database

POMDP-based dialogue manager adaptation to extended domains

Gašić, M and Breslin, C and Henderson, M and Kim, D and Szummer, M and Thomson, B and Tsiakoulis, P and Young, S (2013) POMDP-based dialogue manager adaptation to extended domains. In: UNSPECIFIED pp. 214-222..

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Abstract

© 2013 Association for Computational Linguistics. 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. To handle dynamically changing domains, techniques will be needed to transfer and reuse existing dialogue policies and rapidly adapt them using a small number of dialogues in the new domain. As a first step in this direction, this paper 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. The paper shows that 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.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: Div F > Machine Intelligence
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:39
Last Modified: 22 Sep 2017 20:12
DOI: