Advanced information regarding the theory, concepts and applications of recurrent neural networks and the field of soft computing has been highlighted in this elaborative book. A broad spectrum of topics is encompassed in this book like neural networks and static modelling, neuro-fuzzy digital filter, ranking indices for fuzzy numbers, controller designs for nonlinear dynamic systems, etc. The aim of this book is to serve as a valuable source of reference for a wide range of readers including scientists, researchers and students. It consists of contributions made by veteran researchers from across the globe.