Non-atomic Classification to Improve a Semantic Role Labeler for a Low-resource Language
Richard Johansson · Joint Conference on Lexical and Computational Semantics · 2012
Semantic role classification accuracy for most languages other than English is constrained by the small amount of annotated data. In this paper, we demonstrate how the frame-to-frame relations described in the FrameNet ontology can be used to improve the performance of a FrameNet-based semantic role classifier for Swedish, a low-resource language. In order to make use of the FrameNet relations, we cast the semantic role classification task as a non-atomic label prediction task. The experiments show that the cross-frame generalization methods lead to a 27% reduction in the number of errors made by the classifier. For previously unseen frames, the reduction is even more significant: 50%.