Publications
Authors:
  • Xavier Lluis , Xavier Carreras , Lluis Marquez
Citation:
Conference on Empirical Methods in Natural Language Processing (EMNLP 2014), October 25–29, Doha, Qatar. Full paper available on <a href=http://aclweb.org/anthology/D14-1049> EMNLP Website </a>
Abstract:
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.
Year:
2014
Report number:
2014/066
Attachments: