Evaluation of Multilingual and Multi-modal Information Retrieval 7th Workshop of the Cross-Language Evaluation Forum, CLEF 2006, Alicante, Spain, September 20-22, 2006, Revised Selected Papers - Peters, Carol; Clough, Paul; Gey, Fredric C.; Karlgren, Jussi; Magnini, Bernardo; Oard, Douglas W.; Rijke, Maarten de; Stempfhuber, Maximilian (Springer Berlin Heidelberg, 2007)