2026-09-14T22:17:12Zhttps://gredos.usal.es/oai/requestoai:gredos.usal.es:10366/557322025-06-05T12:40:28Zcom_10366_4386com_10366_4349com_10366_3946com_10366_3823col_10366_4392
Gestión del Repositorio Documental de la Universidad de Salamanca
author
Zazo Rodríguez, Ángel Francisco
author
García de Figuerola Paniagua, Luis Carlos
author
Alonso Berrocal, José Luis
2009-01-26
2009-10-14T12:04:32Z
2007
Zazo Rodríguez, A.F., García Figuerola, L.C., Alonso Berrocal, J.L. (2007). REINA at CLEF 2007 Robust Task. En Nardi, A., Peters, C. (Eds.), "Working Notes for the CLEF 2007 Workshop, 19-21 September, Budapest, Hungary". [CD-ROM]
http://hdl.handle.net/10366/55732
This paper describes our work at CLEF 2007 Robust Task. We have participated in the monolingual (English, French and Portuguese) and the bilingual (English to French) subtask. At CLEF 2006 our research group obtained very good results applying local query expansion using windows of terms in the robust task. This year we have used the same expansion technique, but taking into account some criteria of robustness: MAP, GMAP, MMR, GS@10, P@10, number of failed topics, number of topics bellow 0.1 MAP, and number of topics with P@10=0. In bilingual retrieval experiments threemachine translation programs were used to translate topics. For the target language, translations were merged before performing a monolingual retrieval. We also applied the same local expansion technique. This year the results were disappointing. We think out that the reason is the difficulty to select the best measurement for robustness. Perhaps the problem is that all measurements are average results over all topics, but thehard topics are inherently hard and must be analyze separately. This year all our runs also ends up in good ranking, both base runs and expanded ones. We think that the reason is that we used a good information retrieval system, and the expansion technique is robust because it does not deteriorate significantly the retrieval performance.
eng
Attribution-NonCommercial-NoDerivs 3.0 Unported
Expansión de consulta
Plazo Windows
Tesauros de Asociación
CLIR
Traducción automática
Robust retrieval
Query expansion
Term Windows
Association thesauri
Cross-Language Information Retrieval
Machine translation
Almacenamiento y recuperación de la información
REINA at CLEF 2007 Robust Task
info:eu-repo/semantics/article
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URL
https://gredos.usal.es/bitstream/10366/55732/1/DIA_REINA%20at%20CLEF%202007.pdf
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DIA_REINA at CLEF 2007.pdf
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https://gredos.usal.es/bitstream/10366/55732/4/DIA_REINA%20at%20CLEF%202007.pdf.txt
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DIA_REINA at CLEF 2007.pdf.txt