Perception in Multimodal Dialogue Systems 4th IEEE Tutorial and Research Workshop on Perception and Interactive Technologies for Speech-Based Systems, PIT 2008, Kloster Irsee, Germany, June 16-18, 2008. Proceedings - André, Elisabeth; Dybkjær, Laila; Minker, Wolfgang; Neumann, Heiko; Pieraccini, Roberto; Weber, Michael (Springer Berlin Heidelberg, 2008)