Professor Neeraj Bhargava has done his B.Tech in computer science from the Central University of Hyderabad, India and M.S. in computer science from BITS Pilani, India, and has also completed his PhD in computer science from the University of Rajasthan, Jaipur, India. He has been consistently delivering his services in teaching and motivating the students for more than three decades now. Currently, he is associated with the Department of Computer Science, School of Engineering and System Sciences, MDS University, Ajmer, Rajasthan, India, as a Professor and Head. He is also Nodal in-charge for the NME-ICT project, MHRD, and Govt. of India. He has been guiding many research scholars in Computer Science. He is a convener and a member of many academic bodies like the board of studies and many reputed universities in India. He has written numerous books on a national as well as international level and has published more than 100 prominent research papers in International Journals and contributed as an organizing chair in more than 15 national and international conferences. His area of research primarily includes GIS Spatial Data Management System, Machine Learning, 3D Computer Graphics, Computer Vision, E-learning, and Ad-hoc Network. Mr. Bhargava s work for face recognition and fingerprint recognition has been cited in many reputed research works, and he has also visited many foreign countries as a keynote speaker. Pramod Singh Rathore is pursuing his doctorate in computer science and holds a degree in M. Tech in computer science and engineering from Rajasthan Technical University, a government engineering college in Kota, Ajmer. He has been working as an assistant computer science professor at the Aryabhatt Engineering College and Research Centre, Ajmer, Rajasthan, and is also a part of the visiting faculty in Government University MDS, Ajmer. He has a total academic teaching experience of more than 8 years, with more than 45 publications in reputed, peer-reviewed national and international journals; books and conferences like Wiley, IGI GLOBAL, Taylor & Francis Springer, Elsevier Science Direct, Annals of Computer Science, Poland, and IEEE. He has also co-authored three edited books and is currently working on a Network Simulation Book with Wiley Publications, and a Machine Learning book with BPB Publications. Mr. Rathore s research area includes NS2, Computer Network, Mining, and DBMS. He is also an editorial and advisory committee member of the Global Journal Group, as well as a member of various national and international professional societies in the field of engineering and research, such as Member of IAENG (International Association of Engineers). Dr Ritu Bhargava is an assistant professor at the Department of Computer Science, Sophia Girls College, Ajmer. She holds a PhD in computer science from Hemchandracharya North Gujarat University, Patan, Gujarat. She also has more than 15 years of active teaching and research experience and has delivered a series of talks and lectures at reputed universities of India. She is a life member of CSI, and a member of ACM and IEEE. She has written 3 books with national and international publishers and has more than 30 prominent research papers in international journals. Additionally, she has contributed as an organizing chair in more than 15 national and international conferences. Her area of research includes Data Mining, GIS Spatial Data Management System, Machine Learning, 3D Computer Graphics, Computer Vision, E-learning, and Ad-hoc Network. Her work for face recognition and fingerprint recognition has been cited in many reputed research works. Abhishek Kumar holds a doctorate in computer science from the University of Madras and has done his M.Tech in computer science and engineering from Rajasthan Technical University, a government engineering college in Kota, Ajmer. --This text refers to the paperback edition.