Statistical Surface Realisation of Portuguese Referring Expressions

  • Authors:
  • Daniel Bastos Pereira;Ivandré Paraboni

  • Affiliations:
  • Escola de Artes, Ciências e Humanidades, Universidade de São Paulo (EACH / USP), São Paulo, Brazil 1000 - 03828-000;Escola de Artes, Ciências e Humanidades, Universidade de São Paulo (EACH / USP), São Paulo, Brazil 1000 - 03828-000

  • Venue:
  • GoTAL '08 Proceedings of the 6th international conference on Advances in Natural Language Processing
  • Year:
  • 2008

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Abstract

Natural Language Generation systems usually require substantial knowledge about the structure of the target language in order to perform the final task in the generation process --- the mapping from semantic representation to text known as surface realisation. Designing knowledge bases of this kind, typically represented as sets of grammar rules, may however become a costly, labour-intensive enterprise. In this work we take a statistical approach to surface realisation in which no linguistic knowledge is hard-coded, but rather trained automatically from large corpora. Results of a small experiment in the generation of referring expressions show significant levels of similarity between our (computer-generated) text and those produced by humans, besides the usual benefits commonly associated with statistical NLP such as low development costs, domain- and language-independency.