More and more information, audio and video, as well as a range of other types of information, is generated, processed, and used by machines today, even though the end user may be a human. The result over the past 15 years has been a substantial increase in the types of information and a change in the way humans generate, classify, store, search, access, and consume information. Conversion of information to digital form is a prerequisite for this enhanced machine role, but it must be done with considerations such as compactness, fidelity, and interpretability. This book presents new ways of dealing with digital information and new types of digital information that underpin the evolution of society and business.