Information Access Evaluation. Multilinguality, Multimodality, and Visual Analytics Third International Conference of the CLEF Initiative, CLEF 2012, Rome, Italy, September 17-20, 2012. Proceedings - Catarci, Tiziana; Forner, Pamela; Hiemstra, Djoerd; Peñas, Anselmo; Santucci, Giuseppe (Springer Berlin Heidelberg : Imprint: Springer, 2012)