Optimistic backtracking: a backtracking overlay for deterministic incremental parsing

  • Authors:
  • Gisle Ytrestøl

  • Affiliations:
  • University of Oslo

  • Venue:
  • HLT-SS '11 Proceedings of the ACL 2011 Student Session
  • Year:
  • 2011

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Abstract

This paper describes a backtracking strategy for an incremental deterministic transition-based parser for HPSG. The method could theoretically be implemented on any other transition-based parser with some adjustments. In this paper, the algorithmis evaluated on CuteForce, an efficient deterministic shift-reduce HPSG parser. The backtracking strategy may serve to improve existing parsers, or to assess if a deterministic parser would benefit from backtracking as a strategy to improve parsing.