Evaluation of Multilingual and Multi-modal Information Retrieval [electronic resource] : 7th Workshop of the Cross-Language Evaluation Forum, CLEF 2006, Alicante, Spain, September 20-22, 2006, Revised Selected Papers / edited by Carol Peters, Paul Clough, Fredric C. Gey, Jussi Karlgren, Bernardo Magnini, Douglas W. Oard, Maarten Rijke, Maximilian Stempfhuber.