Berger et al. ( 2000 ) compared two retrieval approaches ( TF.IDF and query expansion ) and two predictive approaches ( statistical translation and latent variable models ) .
bridging the lexical chasm statistical approaches to answerfinding
A Berger R Caruana D Cohn D Freitag V Mittal
They complemented this approach with machine learning techniques that automatically learn the weights of different retrieval models . Berger et al. ( 2000 ) compared two retrieval approaches ( TF.IDF and query expansion ) and two predictive approaches ( statistical translation and latent variable models ) . Jijkoun and de Rijke ( 2005 ) compared different variants of retrieval techniques .
@@CITATION compared two retrieval approaches ( TF.IDF and query expansion ) and two predictive approaches ( statistical translation and latent variable models ) .