Ramón López-Cózar Delgado is Associate Professor in the Department of Languages and Computer Systems, Computer Science Faculty, Granada University, Spain. He has published over 30 papers in international journals and conferences concerned with dialogue systems. He is member of the COST Action 278 “Spoken Language Interaction in Telecommunications” Masahiro Araki is an Associate Professor at Department of Electronics and Information Science, Kyoto Institute of Technology. His current interests are spoken dialogue processing and artificial intelligence. He is a member of ACL and ISCA.João P. Neto is Assistant Professor at Instituto Superior Técnico (IST), Technical University of Lisbon in signal theory, discrete signal processing, control systems and neural networks. His research interests focus on spoken, multimodal and multilingual dialogue systems, speech recognition and understanding, dialogue management and speech synthesis.