Title:
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A second-order joint Eisner model for syntactic and semantic dependency parsing
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Author:
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Lluis Martorell, Xavier; Bott, Stefan Markus; Màrquez Villodre, Lluís
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics; Universitat Politècnica de Catalunya. GPLN - Grup de Processament del Llenguatge Natural |
Abstract:
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We present a system developed for the
CoNLL-2009 Shared Task (Hajic et al., 2009).
We extend the Carreras (2007) parser to
jointly annotate syntactic and semantic dependencies.
This state-of-the-art parser factorizes
the built tree in second-order factors. We
include semantic dependencies in the factors
and extend their score function to combine
syntactic and semantic scores. The parser is
coupled with an on-line averaged perceptron
(Collins, 2002) as the learning method. Our
averaged results for all seven languages are
71.49 macro F1, 79.11 LAS and 63.06 semantic
F1. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Informàtica::Aplicacions de la informàtica -Computational linguistics -- Research -Natural language processing (Computer science) -Llenguatge natural (Informàtica) -- Processament -Lingüística computacional |
Rights:
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Document type:
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Article - Published version Conference Object |
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