The role and resolution of textual entailment in natural language processing applications

  • Authors:
  • Zornitsa Kozareva;Andrés Montoyo

  • Affiliations:
  • Departamento de Lenguajes y Sistemas Informáticos, Universidad de Alicante;Departamento de Lenguajes y Sistemas Informáticos, Universidad de Alicante

  • Venue:
  • NLDB'06 Proceedings of the 11th international conference on Applications of Natural Language to Information Systems
  • Year:
  • 2006

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Abstract

A fundamental phenomenon in Natural Language Processing concerns the semantic variability of expressions. Identifying that two texts express the same meaning with different words is a challenging problem. We discuss the role of entailment for various Natural Language Processing applications and develop a machine learning system for their resolution. In our system, text similarity is based on the number of consecutive and non-consecutive word overlaps between two texts. The system is language and resource independent, as it does not use external knowledge resources such as WordNet, thesaurus, semantic, syntactic or part-of-speech tagging tools. In this paper all tests were done for English, but our system can be used with no restrains by other languages.