About the Authors

Suresh K. Gorakala is a blogger, data analyst, and consultant on data mining, big data analytics, and visualization tools. Since 2013, he has been writing and maintaining a blog on data science at http://www.dataperspective.info/.

Suresh holds a bachelor's degree in mechanical engineering from SRKR Engineering College, which is affiliated with Andhra University, India.

He loves generating ideas, building data products, teaching, photography, and travelling. Suresh can be reached at <[e-mail]>.You can also follow him on Twitter at @sureshgorakala.

With great pleasure, I sincerely thank everyone who has supported me all along. I would like to thank my dad, my loving wife, and sister, who have supported me in all respects and without whom this book would not have been completed.

I am also grateful to my friends Rajesh, Hari, and Girish, who constantly support me and have stood by me in times of difficulty. I would like to extend a special thanks to Usha Iyer and Kirti Patil, who supported me in completing all my tasks. I would like to specially mention Michele Usuelli, without whom this book would be incomplete.

Michele Usuelli is a data scientist, writer, and R enthusiast specialized in the fields of big data and machine learning. He currently works for Revolution Analytics, the leading R-based company that got acquired by Microsoft in April 2015. Michele graduated in mathematical engineering and has worked with a big data start-up and a big publishing company in the past. He is also the author of R Machine Learning Essentials, Packt Publishing.