Un sistema basado en conocimiento para el reconocimiento de implicación textual

1. Ferrández Escámez, Óscar
2. Muñoz Terol, Rafael
3. Muñoz Guillena, Rafael
4. Martínez Barco, Patricio
5. Palomar Sanz, Manuel

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More publications in: Procesamiento del lenguaje natural

Abstract

This paper covers the recognition of textual entailment by means of an approach based on knowledge. Our approach consists of two stages. The first stage infers the logic forms from two fragments of text. These logic forms are obtained by analysing the dependency relations between words. And the second stage carries out several methods in order to achieve a score that determines the semantic similarity between the derived logic forms. Depending on this score the system establishes the existence of an entailment relation. All the methods use the WordNet lexical database as a knowledge source and obtain a semantic similarity score by means of WordNet relations. Our approach has been evaluated within the PASCAL Second RTE Challenge and achieved 60% average precision.

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