The advent of the digital era, the Internet, and the development of fast com puting devices that can access mass storage servers at high communication bandwidths have brought within our reach the world of ambient intelligent systems. These systems provide users with information, communication, and entertainment at any desired place and time. Since its introduction in 1998, the vision of Ambient Intelligence has attracted much attention within the re search community. Especially, the need for intelligence generated by smart al gorithms, which run on digital platforms that are integrated into...