Engineering of syntactic features for shallow semantic parsing

Authors:
Alessandro Moschitti;Bonaventura Coppola;Daniele Pighin;Roberto Basili
Affiliations:
University of Rome "Tor Vergata", Rome, Italy;University of Trento, Povo-Trento, Italy;University of Rome "Tor Vergata", Rome, Italy;University of Rome "Tor Vergata", Rome, Italy
Venue:
FeatureEng '05 Proceedings of the ACL Workshop on Feature Engineering for Machine Learning in Natural Language Processing
Year:
2005

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Abstract

Recent natural language learning research has shown that structural kernels can be effectively used to induce accurate models of linguistic phenomena. In this paper, we show that the above properties hold on a novel task related to predicate argument classification. A tree kernel for selecting the subtrees which encodes argument structures is applied. Experiments with Support Vector Machines on large data sets (i.e. the PropBank collection) show that such kernel improves the recognition of argument boundaries.