In: Andrei Popescu-Belis; Rainer Stiefelhagen (Hrsg.). Machine Learning for Multimodal Interaction. Machine Learning and Multimodal Interaction (MLMI), 5th International Workshop, MLMI 2008, September 8-10, Utrecht, Netherlands, Pages 349-361, Lecture Notes in Computer Science (LNCS), Vol. 5237, ISBN 978-3-540-85852-2, Springer, Heidelberg, 2008.