A hierarchical description of the Portuguese verb

  • Paul McFetridge
  • Aline Villavicencio
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 991)


This paper presents an analysis of the Portuguese using DATR, a language designed for lexical representation by nonmonotonic inheritance hierarchies. The analysis shows that the verb has a consistent structure and that variations can be organized into subclasses that are themselves regular. The default inheritance rule of DATR permits and economical description of the structure of the verb while also retaining sufficient information that exceptions can be described in the appropriate points of the grammar.


natural language understanding nonmonotonic reasoning 


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  1. [1]
    Evans, R. and G. Gazdar. The DATR Papers, Volume 1. Brighton, School of Cognitive and Computing Sciences, The University of Sussex, 1990.Google Scholar
  2. [2]
    Pollard, C. and I. Sag. Information-based Syntax and Semantics: Fundamentals. CSLI Lecture Notes. Stanford, Center for the Study of Language and Information, 1987.Google Scholar
  3. [3]
    Pollard, C. and I. Sag. Head-Driven Phrase Structure Grammar. Chicago, Chicago University Press, 1994.Google Scholar
  4. [4]
    Shieber, Stuart M. An Introduction to Unification-Based Approaches to Grammar. Chicago: University of Chicago Press, 1986.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • Paul McFetridge
    • 1
  • Aline Villavicencio
    • 2
  1. 1.Department of LinguisticsSimon Fraser UniversityBurnabyCanada
  2. 2.Institute de InformáticaUniversidade Federal do Rio Grande SulPorto Alegre, RSBrazil

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