The computational complexity of the correct-prefix property for TAGs

  • Authors:
  • Mark-Jan Nederhof

  • Affiliations:
  • German Research Center for Artificial Intelligence

  • Venue:
  • Computational Linguistics
  • Year:
  • 1999

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Abstract

A new upper bound is presented for the computational complexity of the parsing problem for TAGs, under the constraint that input is read from left to right in such a way that errors in the input are observed as soon as possible, which is called the "correct-prefix property." The former upper bound, O(n9), is now improved to O(n6), which is the same as that of practical parsing algorithms for TAGs without the additional constraint of the correct-prefix property.