SIGIR03 - Filtering and retrieval models An empirical study on retrieval models for different document genres: patents and newspaper articles Makoto Iwayama Atsushi Fujii Noriko Kando Yuzo Marukawa Building a filtering test collection for TREC 2002 Ian Soboroff Stephen E. Robertson Collaborative filtering via gaussian probabilistic latent semantic analysis Thomas Hofmann Return to SIGIR03 session listing ©2004 Association for Computing Machinery