Fondazione Ugo Bordoni at TREC 2004
نویسندگان
چکیده
Our participation in TREC 2004 aims to extend and improve the use of the DFR (Divergence From Randomness) models with Query Expansion (QE) for the robust track. We experiment with a new parameter-free version of Rocchio’s Query Expansion and use the information theory based function, InfoDFR to predict the AP (Average Precision) of queries. We also study how the use of an external collection affects the retrieval-performance.
منابع مشابه
CNIPA, FUB and University of Rome "Tor Vergata" at TREC 2008 Legal Track
1 Fondazione Ugo Bordoni (FUB), Rome, Italy [email protected] 2 Italian National Centre for ICT in the Public Administrations (CNIPA), Rome, Italy [email protected], [email protected] 3 Computer Science Department at University of L’Aquila, L’Aquila, Italy [email protected] 4 Matematics Department at University of Rome “Tor Vergata”, Rome, Italy [email protected] 5 NESTOR Laborator...
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