Improved left-corner chart parsing for large context-free grammars

  • Authors:
  • Robert C. Moore

  • Affiliations:
  • Microsoft Research, Redmond, Washington

  • Venue:
  • New developments in parsing technology
  • Year:
  • 2004

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Abstract

We develop an improved form of left-corner chart parsing for large context-free grammars, introducing improvements that result in significant speed-ups compared to previously-known variants of left-corner parsing. We also compare our method to several other major parsing approaches, and find that our improved left-comer parsing method outperforms each of these across a range of grammars. In addition, we describe a new technique for minimizing the extra information needed to efficiently recover parses from the data structures built in the course of parsing.