Título:
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A shortest-path method for arc-factored semantic role labeling
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Autor/a:
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Lluis Martorell, Xavier; Carreras Pérez, Xavier; Márquez Villodre, Luís
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Ciències de la Computació; Universitat Politècnica de Catalunya. GPLN - Grup de Processament del Llenguatge Natural |
Abstract:
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We introduce a Semantic Role Labeling (SRL) parser that finds semantic roles for a predicate together with the syntactic paths linking predicates and arguments. Our main contribution is to formulate SRL in terms of shortest-path inference, on the assumption that the SRL model is restricted to arc-factored features of the syntactic paths behind semantic roles. Overall, our method for SRL is a novel way to exploit larger variability in the syntactic realizations
of predicate-argument relations, moving away from pipeline architectures.
Experiments show that our approach improves the robustness of the predictions, producing arc-factored models that perform closely to methods using unrestricted features from the syntax |
Abstract:
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Peer Reviewed |
Materia(s):
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-Àrees temàtiques de la UPC::Informàtica::Intel·ligència artificial::Llenguatge natural -Semantic computing -Semantic analysis (machine learning) -Semàntica computacional |
Derechos:
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Tipo de documento:
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Artículo - Versión publicada Objeto de conferencia |
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