Today, data science is used in almost all areas: you see advertisements selected specifically for you, films and books recommended based on your preferences, links to supposed friends on social networks, filtered emails in the spam folder. The book introduces the basics of science about data. It covers all the key aspects, from the history of data collection and analysis to the ethical issues surrounding information privacy. The authors explain how neural networks and machine learning work, give examples of analyzing business problems and how they can be solved, and talk about the areas where data science will have the greatest impact in the future. “Data Science” has already been translated into Japanese, Korean and Chinese languages.