Análisis de la expansión de consulta para colecciones médicas utilizando información mutua, ganancia de información y la ontología MeSH
- Perea Ortega, José Manuel
- Montejo Ráez, Arturo
- Díaz Galiano, Manuel Carlos
- García Cumbreras, Miguel Ángel
ISSN: 1135-5948
Any de publicació: 2011
Número: 47
Pàgines: 13-19
Tipus: Article
Altres publicacions en: Procesamiento del lenguaje natural
Resum
In this paper we show several experiments related to query expansion in medical information retrieval systems, using ImageCLEFmed as a evaluation framework. We have evaluated different query expansion techniques such as PRF and others based on the use of the medical ontology MeSH. Specifically, in this latter case, different types of filtering have been tested, based on a previous selection of MeSH categories and the application of concepts such as information gain and mutual information. The results show that the PRF expansion slightly improves the base case without expanding the query, while the desirability of the expansion with MeSH terms is difficult to determine. However, we can deduce that the expansion with MeSH terms introduced too much noise during the retrieval process, at least by the techniques applied in this work.
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