This book offers a comprehensive study of computer recognition systems - one of the most promising directions in artificial intelligence. It presents a collection of 52 carefully selected articles contributed by experts in the field of pattern recognition, discussing both methodological aspects and applications of current research. It includes the following sections:* Features, learning, and classifiers* Biometrics* Data stream classification and big data analytics* Image processing and computer vision* Medical applications* Applications It is a valuable reference tool for scientists dealing with the problems of designing computer pattern recognition systems, including researchers and students of computer science, artificial intelligence and robotics.