A Thematic Hierarchy for Efficient Generation from Lexical-Conceptual Structure

Abstract

This paper describes an implemented algorithm for syntactic realization of a target-language sentence from an interlingual representation called Lexical Conceptual Structure (LCS). We provide a mapping between LCS thematic roles and Abstract Meaning Representation (AMR) relations; these relations serve as input to an off-the-shelf generator (Nitrogen). There are two contributions of this work: (1) the development of a thematic hierarchy that provides ordering information for realization of arguments in their surface positions; (2) the provision of a diagnostic tool for detecting inconsistencies in an existing online LCS-based lexicon that allows us to enhance principles for thematic-role assignment.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1998
Accession Number
ADA458673

Entities

People

  • Bonnie J. Dorr
  • David Traum
  • Nizar Habash

Organizations

  • University of Maryland

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  • Computational Linguistics
  • Systems Analysis and Design