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Logic Journal of IGPL 2003 11(4):485-511; doi:10.1093/jigpal/11.4.485
© 2003 by Oxford University Press
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Original Article

Incremental Information State Updates in an Obligation-Driven Dialogue Model

Jörn Kreutel1 and Colin Matheson2

1 SemanticEdge, Berlin. E-mail: joern.kreutel{at}semancticedge.com 2 Language Technology Group, University of Edinburgh. E-mail: colin.matheson{at}ed.ac.uk

We sketch the outlines of a dialogue model using DISCOURSE OBLIGATIONS in a formal framework of information states. We propose a set of practical inference rules which incrementally update information states and assign intentional structures to sequences of dialogue moves. In this way we show that an obligation-driven approach can account for a wide range of phenomena which are assumed to be crucial for modelling any kind of dialogue. In particular, our analysis will focus on providing a treatment of questions and assertions in dialogue, thus covering some of the basic reasoning processes involved in information-oriented interaction.

Received February 2001.


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