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Title:
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A shortest-path method for arc-factored semantic role labeling
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Author:
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Lluis Martorell, Xavier; Carreras Pérez, Xavier; Márquez Villodre, Luís
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Other authors:
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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 |
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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 |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Informàtica::Intel·ligència artificial::Llenguatge natural
-Semantic computing
-Semantic analysis (machine learning)
-Semàntica computacional |
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Rights:
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Document type:
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Article - Published version
Conference Object |
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