Sharan Kumar Ravindran is a data scientist with over five years of experience. He is currently working for a leading e-commerce company in India. His primary interests lie in statistics and machine learning, and he has worked with customers from 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 for Anna University to train their staff, research scholars, and volunteers in analytics. In addition to coauthoring Social Media Mining with R, he has also reviewed R Data Visualization Cookbook. He maintains a website, www.rsharankumar.com, with links to his social profiles and blog. Vikram Garg ( @vikram_garg) is a senior analytical engineer at a Big Data organization. He is passionate about applying machine learning approaches to any given domain and creating technology to amplify human intelligence. He completed his graduation in computer science and electrical engineering from IIT, Delhi. When he is not solving hard problems, he can be found playing tennis or in a swimming pool.
