Interactive question answering and constraint relaxation in spoken dialogue systems

Authors:
S. Varges;F. Weng;H. Pon-barry
Affiliations:
Department of information and communication technology, university of trento, 38050 povo di trento, italy e-mail: varges@dit.unitn.it;Bosch research and technology center, 4009 miranda ave., palo alto, ca 94304, usa e-mail: fuliang.weng@us.bosch.com;School of engineering and applied sciences, harvard university, 33 oxford st., cambridge, ma 02138, usa e-mail: ponbarry@eecs.harvard.edu
Venue:
Natural Language Engineering
Year:
2009

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Abstract

We explore the relationship between question answering and constraint relaxation in spoken dialogue systems and develop dialogue strategies for selecting and presenting information succinctly. In particular, we describe methods for dealing with the results of database queries in information-seeking dialogues. Our goal is to structure the dialogue in such a way that the user is neither overwhelmed with information nor left uncertain as to how to refine the query further. We present two sets of evaluation results for a restaurant selection task: one is a system performance evaluation experiment involving twenty subjects, the other is an experimental evaluation of the use of suggestions involving sixteen subjects.