Artificial Intelligence is the field which aims to develop digital computers, softwares, artificial robotics and systems which can mimic and emulate human intellectual processes like the capability to reason, apprehend, analyse and learn from past experiences. It is widely used for designing and programming advanced systems that can perform complex tasks with high proficiency and accuracy. There has been rapid progress in this field and its applications are finding their way across multiple industries. The book aims to shed light on some of the important aspects of A.I. such as knowledge reasoning and knowledge engineering, cognitive stimulation, general and social intelligence, and also the recent researches within this field. For all those who are interested in artificial intelligence, this book can prove to be an essential guide.