From the reviews: This work contains the results that were obtained for a novel type of spoken-language dialogue system. ... The main goal of the research project described in the book was to develop a dialogue system that appears as an independent dialogue partner in the interaction with two persons. ... The book is excellent from a didactical point of view, too. It is recommended to researchers, teachers and students. (E. Kostolansky, Zentralblatt MATH, Vol. 1206, 2011)