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Title:Natural Language Generation as Planning Under Uncertainty for Spoken Dialogue Systems
Authors: Verena Rieser ; Oliver Lemon
Date:Mar 2009
Publication Title:12th Conference of the European Chapter of the Association for Computational Linguistics (EACL)
Publication Type:Conference Paper Publication Status:Published
Abstract:
We present and evaluate a new model for Natural Language Generation (NLG) in Spoken Dialogue Systems, based on statistical planning, given noisy feedback from the current generation context (e.g. a user and a surface realiser). We study its use in a standard NLG problem: how to present information (in this case a set of search results) to users, given the complex trade-offs between utterance length, amount of information conveyed, and cognitive load. We set these trade-offs by analysing existing MATCH data. We then train a NLG policy using Reinforcement Learning (RL), which adapts its behaviour to noisy feedback from the current generation context. This policy is compared to several baselines derived from previous work in this area. The learned policy significantly outperforms all the prior approaches.
Copyright:
2009 by The University of Edinburgh. All Rights Reserved
Links To Paper
1st Link
Bibtex format
@InProceedings{EDI-INF-RR-1324,
author = { Verena Rieser and Oliver Lemon },
title = {Natural Language Generation as Planning Under Uncertainty for Spoken Dialogue Systems},
book title = {12th Conference of the European Chapter of the Association for Computational Linguistics (EACL)},
year = 2009,
month = {Mar},
url = {http://homepages.inf.ed.ac.uk/vrieser/papers/rieser-lemon-eacl09.pdf},
}


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