A robust combination strategy for semantic role labeling

Authors:
Lluís Márquez;Mihai Surdeanu;Pere Comas;Jordi Turmo
Affiliations:
Technical University of Catalunya, Barcelona, Spain;Technical University of Catalunya, Barcelona, Spain;Technical University of Catalunya, Barcelona, Spain;Technical University of Catalunya, Barcelona, Spain
Venue:
HLT '05 Proceedings of the conference on Human Language Technology and Empirical Methods in Natural Language Processing
Year:
2005

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Abstract

This paper focuses on semantic role labeling using automatically-generated syntactic information. A simple and robust strategy for system combination is presented, which allows to partially recover from input parsing errors and to significantly boost results of individual systems. This combination scheme is also very flexible since the individual systems are not required to provide any information other than their solution. Extensive experimental evaluation in the CoNLL-2005 shared task framework supports our previous claims. The proposed architecture outperforms the best results reported in that evaluation exercise.