Constraints over Lambda-Structures in semantic underspecification

  • Authors:
  • Markus Egg;Joachim Niehren;Peter Ruhrberg;Feiyu Xu

  • Affiliations:
  • Universität des Saarlandes, Saarbrücken, Germany;Universität des Saarlandes, Saarbrücken, Germany;Universität des Saarlandes, Saarbrücken, Germany;Universität des Saarlandes, Saarbrücken, Germany

  • Venue:
  • COLING '98 Proceedings of the 17th international conference on Computational linguistics - Volume 1
  • Year:
  • 1998

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Abstract

We introduce a first-order language for semantic underspecification that we call Constraint Language for Lambda-Structures (CLLS). A λ-structure can be considered as a λ-term up to consistent renaming of bound variables (λ-equality); a constraint of CLLS is an underspecified description of a λ-structure. CLLS solves a capturing problem omnipresent in underspecified scope representations. CLLS features constraints for dominance, lambda binding, parallelism, and anaphoric links. Based on CLLS we present a simple, integrated, and underspecified treatment of scope, parallelism, and anaphora.