Fondazione Ugo Bordoni at TREC 2003: Robust and Web Track

  title={Fondazione Ugo Bordoni at TREC 2003: Robust and Web Track},
  author={Gianni Amati and Claudio Carpineto and Giovanni Romano},
Our participation in TREC 2003 aims to adapt the use of the DFR (Divergence From Randomness) models with Query Expansion (QE) to the robust track and the topic distillation task of the Web track. We focus on the robust track, where the utilization of QE improves the global performance but hurts the performance on the worst topics. In particular, we study the problem of the selective application of the query expansion. We define two information theoretic functions which are shown to be… CONTINUE READING
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