TREC-8 Automatic Ad-Hoc Experiments at Fondazione Ugo Bordoni

FUB, IASI-CNR, UNIVAQ at TREC 2011 Microblog Track

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...

Fondazione Ugo Bordoni at TREC 2004

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 af...

Cognitive Agents for Automatic Generation of Valid XML

CLARIT Compound Queries and Constraint-Controlled Feedback in TREC-5 Ad-Hoc Experiments

A fundamental problem for searching over large databases in ad-hoc mode is the formulation of an effective initial query that is both comprehensive and focused. The query needs to be comprehensive enough to retrieve, on its own or enhanced by various automatic feedback techniques, relevant documents that possibly address different aspects of the topic. At the same time, it has to be focused eno...