Exploring an auxiliary distribution based approach to domain adaptation of a syntactic disambiguation model

  • Authors:
  • Barbara Plank;Gertjan van Noord

  • Affiliations:
  • University of Groningen, The Netherlands;University of Groningen, The Netherlands

  • Venue:
  • CrossParser '08 Coling 2008: Proceedings of the workshop on Cross-Framework and Cross-Domain Parser Evaluation
  • Year:
  • 2008

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Abstract

We investigate auxiliary distributions (Johnson and Riezler, 2000) for domain adaptation of a supervised parsing system of Dutch. To overcome the limited target domain training data, we exploit an original and larger out-of-domain model as auxiliary distribution. However, our empirical results exhibit that the auxiliary distribution does not help: even when very little target training data is available the incorporation of the out-of-domain model does not contribute to parsing accuracy on the target domain; instead, better results are achieved either without adaptation or by simple model combination.