Joint learning of preposition senses and semantic roles of prepositional phrases

  • Authors:
  • Daniel Dahlmeier;Hwee Tou Ng;Tanja Schultz

  • Affiliations:
  • NUS Graduate School for Integrative Sciences and Engineering;NUS Graduate School for Integrative Sciences and Engineering and National University of Singapore;University of Karlsruhe

  • Venue:
  • EMNLP '09 Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing: Volume 1 - Volume 1
  • Year:
  • 2009

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Abstract

The sense of a preposition is related to the semantics of its dominating prepositional phrase. Knowing the sense of a preposition could help to correctly classify the semantic role of the dominating prepositional phrase and vice versa. In this paper, we propose a joint probabilistic model for word sense disambiguation of prepositions and semantic role labeling of prepositional phrases. Our experiments on the PropBank corpus show that jointly learning the word sense and the semantic role leads to an improvement over state-of-the-art individual classifier models on the two tasks.