Shallow Processing and Cautious Incrementality in a Dialogue System Front End: Two Steps towards Robustness and Reactivity

Authors:
Torbjörn Lager
Affiliations:
-
Venue:
TSD '01 Proceedings of the 4th International Conference on Text, Speech and Dialogue
Year:
2001

Citing 2
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Abstract

This paper presents the design and implementation of a simple and robust dialogue system front end which performs rule-driven, incremental processing of user contributions. We describe how a particular instantiation of the front end can be made to perform a variety of tasks such as part of speech disambiguation, word sense disambiguation, noun phrase detection, and dialogue act recognition, always in an incremental manner. Still, incrementality is never allowed to compromise the accuracy of the disambiguation decisions taken by the system. Incrementality is cautious; when correctness is at stake, decisions are delayed, until more information becomes available. Furthermore, the format of the necessary rules is very simple and uniform across different tasks, and rules can be learned automatically from tagged dialogue corpora, using transformation-based learning.