D-tree grammars

  • Authors:
  • Owen Rambow;K. Vijay-Shanker;David Weir

  • Affiliations:
  • CoGen Tex, Inc., Ithaca, NY;University of Delaware, Newark, DE;University of Sussex, Brighton, UK.

  • Venue:
  • ACL '95 Proceedings of the 33rd annual meeting on Association for Computational Linguistics
  • Year:
  • 1995

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Abstract

DTG are designed to share some of the advantages of TAG while overcoming some of its limitations. DTG involve two composition operations called subsertion and sister-adjunction. The most distinctive feature of DTG is that, unlike TAG, there is complete uniformity in the way that the two DTG operations relate lexical items: subsertion always corresponds to complementation and sister-adjunction to modification. Furthermore, DTG, unlike TAG, can provide a uniform analysis for wh-movement in English and Kashmiri, despite the fact that the wh element in Kashmiri appears in sentence-second position, and not sentence-initial position as in English.