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<p>************<wbr>******* Séminaire Alpage ************<wbr>*******<br>
<br>
Séminaire de l'école doctorale de Paris 7<br>
<br>
Il s'agit du séminaire de recherche en linguistique informatique<br>
organisé par l'équipe Alpage, Alpage est une nouvelle équipe mixte<br>
Inria -- Paris 7 issue de la fusion des équipes Atoll et Talana.<br>
L'équipe centre ses intérêts scientifiques autour de l'analyse<br>
syntaxique automatique et du traitement du discours pour la langue<br>
française.<br>
<br>
Le séminaire se tient le lundi de 14.00 à 16.00 tous les 15 jours.<br>
Il a lieu en salle 131 au 30 rue du Château des Rentiers 75013 Paris<br>
(premier étage)<br>
<br>
Toute personne intéressée est la bienvenue.<br>
<br>
************<wbr>*********<wbr>*********<wbr>*********<wbr>*********<wbr>*********<wbr>**<br>
<br>
Lundi 4 mai 2009, Jennifer Foster (Dublin) nous parlera de :<br>
<br>
Detecting and Parsing Ungrammatical Text<br>
<br>
Given the human propensity to err, a parser must be able to produce<br>
accurate analyses for sentences which are deviant according to human<br>
standards, yet which we routinely interpret correctly. State-of-the-<br>
art statistical parsers are generally robust to errors, and they<br>
will return analyses for most ungrammatical sentences. However, these<br>
robust analyses are not necessarily correct because they do not always<br>
reflect the meanings of the ill-formed sentences. I present a two-<br>
stage "error-aware" statistical parsing architecture which uses two<br>
versions of a statistical parser, one trained on a normal treebank<br>
and the other trained on an automatically created ungrammatical version<br>
of the original treebank. A binary classifier is used to decide which<br>
version to employ. I present the results of experiments carried out using this<br>
parsing architecture and the Penn Treebank. I also present the results of<br>
experiments carried out with various grammatical/<wbr>ungrammatical classifiers, and<br>
I present a tool called GenERRate which can be used to automatically create<br>
ungrammatical training data.<br>
<br>
Séminaires à venir :<br>
<br>
18/5 : J.P. Prost (Orléans)<br>
<br>
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