Title: Language-Processing Strategies and Mixed-Initiative Dialogues
Authors: Johan Boye, Mats Wirén, Manny Rayner, Ian Lewin, David Carter, and Ralph Becket
Series: Linkping Electronic Articles in Computer and Information Science
ISSN 1401-9841
Issue: Vol. 4 (1999), No. 024
URL: http://www.ep.liu.se/ea/cis/1999/024/

Abstract: We describe an implemented spoken-language dialogue system for a travel-planning domain, which accesses a commercially available travel-information web-server and supports a flexible mixed-initiative dialogue strategy. We argue, based on data from initial Wizard-of-Oz experiments, that mixed-initiative strategies are appropriate for many types of user, but require more sophisticated architectures for processing of language and dialogue; we then use these observations to motivate an architecture which combines parallel deep and shallow natural language analysis engines and an agenda-driven dialogue manager. We outline the top-level processing strategy used by the dialogue manager, and also a novel formalism, which we call Flat Utterance Description, that allows us to reduce the output of the deep and shallow language-processing engines to a common representation.

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