Estudio del uso de Ontologías para la Expansión de Consultas en Recuperación de Imágenes en el Dominio Biomédico

  1. Maña López, Manuel Jesús
  2. Crespo, Mariano
  3. Mata Vázquez, Jacinto
Journal:
Procesamiento del lenguaje natural

ISSN: 1135-5948

Year of publication: 2011

Issue: 47

Pages: 39-46

Type: Article

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Abstract

The existence of huge collections of medical images in scientific repositories and hospital databases has generated increasing interest in the access to this information. In this paper we address this problem focusing on image retrieval based on textual information related to the image. The initial hypothesis is that query expansion could improve the effectiveness of image retrieval systems. In this proposal, we have used several information elements contained in MeSH and UMLS ontologies. The expansion has been carried out at both term and concept levels. For the experiment we have used the document collection ImageCLEF 2009. The results show a slight increase in MAP and a more significant difference when the evaluation is performed using the F-measure. The final conclusion is that the query expansion is not sufficient to achieve a substantial improvement in the effectiveness of this type of information retrieval systems.

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