GeoTextMESS: result fusion with fuzzy Borda ranking in geographical information retrieval

Authors:
Davide Buscaldi;José Manuel Perea Ortega;Paolo Rosso;L. Alfonso Ureña López;Daniel Ferrés;Horacio Rodríguez
Affiliations:
Natural Language Engineering Lab, ELiRF Research Group, Dpto. de Sistemas Informáticos y Computación, Universidad Politécnica de Valencia;SINAI Research Group, Computer Science Department, Universidad de Jaén;Natural Language Engineering Lab, ELiRF Research Group, Dpto. de Sistemas Informáticos y Computación, Universidad Politécnica de Valencia;SINAI Research Group, Computer Science Department, Universidad de Jaén;TALP Research Center, Universitat Politècnica de Catalunya;TALP Research Center, Universitat Politècnica de Catalunya
Venue:
CLEF'08 Proceedings of the 9th Cross-language evaluation forum conference on Evaluating systems for multilingual and multimodal information access
Year:
2008

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Abstract

In this paper we discuss the integration of different GIR systems by means of a fuzzy Borda method for result fusion. Two of the systems, the one by the Universidad Politécnica de Valencia and the one of the Universidad of Jaén participated to the GeoCLEF task under the name TextMess. The proposed result fusion method takes as input the document lists returned by the different systems and returns a document list where the documents are ranked according to the fuzzy Borda voting scheme. The obtained results show that the fusion method allows to improve the results of the component systems, although the fusion is not optimal, because it is effective only if the components return a similar set of relevant documents.