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Developing a semantic parser for French by partial transfer from English| old_uid | 7724 |
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| title | Developing a semantic parser for French by partial transfer from English |
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| start_date | 2009/11/30 |
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| schedule | 14h-16h |
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| online | no |
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| location_info | salle Rose |
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| summary | One of the currently debated topics in Natural Language Processing is the problem of semantic role labelling. Given a sentence like ``I want to reserve a train from Geneva to Paris'', how do we determine automatically that ``from Geneva'' is the source of the trip and ``to Paris'' is the destination? The solution to this problem lies at the heart of all applications that require language understanding, such
as dialogue systems, question answering, or machine translation.
Recent successes of machine learning methods in statistical parsing and lexical acquisition pave the way to a learning approach for this problem too. In this presentation, I will survey our recent work on this topic. I will first briefly discuss which semantic role labelling scheme is most appropriate for our approach to this task, comparing PropBank to VerbNet along several dimensions. I will then illustrate a probabilistic model of joint learning of syntactic dependency trees
and semantic role dependencies which achieves very competitive results
on current multi-lingual data sets. Finally I will describe work in progress on parsing French (trained on the treebank provided to us by the ALPAGE team) and automatically transferring semantic role annotation onto French dependencies trees to create semantic role annotations for French.
Lectures suggérées :
P. Merlo and L. van der Plas (2009), "Abstraction and Generalisation in Semantic
Role Labels: PropBank, VerbNet or both?", Proceedings of ACL-IJCNLP 2009,
Singapore.(http://www.aclweb.org/anthology/P/P09/P09-1033.pdf)
Gesmundo A., J. Henderson, P. Merlo and I. Titov (2009) "A Latent Variable Model
of Synchronous Syntactic-Semantic Parsing for Multiple Languages" Proceedings of
the Conference on Natural Language Learning (CONLL 2009), Shared Task, Boulder,
CO.(http://www.aclweb.org/anthology/W/W09/W09-1205.pdf)
Henderson, J. Paola Merlo, Gabriele Musillo and Ivan Titov (2008) "A Latent
Variable Model of Synchronous Parsing for Syntactic and Semantic Dependencies",
CONLL 08 shared task (http://www.aclweb.org/anthology/W/W08/W08-2122.pdf) |
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| oncancel | horaire inhabituel |
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| responsibles | Information non disponible, Crabbé |
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