Semi-supervised modeling for prenominal modifier ordering

  • Authors:
  • Margaret Mitchell;Aaron Dunlop;Brian Roark

  • Affiliations:
  • University of Aberdeen, Aberdeen, Scotland, U. K.;Oregon Health & Science University, Portland, OR;Oregon Health & Science University, Portland, OR

  • Venue:
  • HLT '11 Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies: short papers - Volume 2
  • Year:
  • 2011

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Abstract

In this paper, we argue that ordering prenominal modifiers -- typically pursued as a supervised modeling task -- is particularly well-suited to semi-supervised approaches. By relying on automatic parses to extract noun phrases, we can scale up the training data by orders of magnitude. This minimizes the predominant issue of data sparsity that has informed most previous approaches. We compare several recent approaches, and find improvements from additional training data across the board; however, none outperform a simple n-gram model.