About the Authors

Raja B. Koushik is a business intelligence professional with over 7 years of experience and is currently working in one of the leading international IT services companies. His primary interest lies for business intelligence technologies, such as ETL, reporting, and dashboarding, along with analytics based on statistics. He has worked with one of the world's largest companies for both their U.S. as well as UK business in the healthcare and leasing domains. He holds an engineering degree with specialization in information technology from Anna University.

I would like to thank my friends, for I don't know how far I would have come without you guys. I would like to thank Sharan, for giving me this opportunity and also to the Packt team for their constant support. I would like to dedicate this book to Saranya, my wife, for always believing in me and for being so encouraging and supportive of my endeavours; to Shravani, my little bundle of joy, for all the joy and happiness that she has given me; last but not the least, to my parents, Mr Boopalan and Mrs Geetha, without you both I am nothing.

Sharan Kumar Ravindran is a data scientist with over 5 years of experience and is currently working with a leading e-commerce company in India. His primary interest lies in statistics and machine learning, and he has worked with multiple customers across Europe and the U.S. in the e-commerce and IoT domains. He holds an MBA degree with specialization in marketing and business analysis. He conducts workshops, partnering with Anna University, to train their staff, research scholars, and volunteers in analytics. In addition to co-authoring Data Science Essentials with R by Packt Publishing, Sharan has also co-authored Mastering Social Media Mining with R by Packt Publishing. He maintains www.rsharankumar.com, a website with links to his social profiles and data blog.

I would like to thank all my friends, colleagues, and family members, without whom I wouldn't have learned as much as I did. I would also like to thank the readers of my first book, Mastering Social Media Mining, whose feedback helped me a lot. I would like to specially thank my mother, dad, wife, and sister for all the support they provided. I would like to dedicate this book to my grandparents, son, and niece.