Nueva propuesta de desambiguación de sentidos de palabras para nombres en un sistema de búsqueda de respuestas

1. Ferrández Escámez, Sergio
2. Roger, Sandra
3. Ferrández Rodríguez, Antonio
4. Aguilar Antón, Antonia
5. López Moreno, Pilar

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More publications in: Procesamiento del lenguaje natural

Abstract

This paper studies the influence of a Word Sense Disambiguation algorithm for nouns on AliQAn, the Question Answering with which we have participated in the CLEF-2005. Applying the traditional WSD decreases the performance in 4.7% on the Mean Reciprocal Rank (MRR). To solve this problem, we propose two different uses of WSD: (1) to choose a set of synsets instead of the traditional use of WSD, in which only one synset is chosen; (2) to disambiguate the words not present in EuroWordNet (EWN). Using our proposal of WSD the MRR increases a 6.3% with regard to the baseline without WSD. Furthermore, our proposal of WSD increases the MRR with regard to the traditional use of WSD in an 11%. Finally, the implementation of our approach of WSD is computationally efficient by means of a preprocessing of EWN.

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