can only show you the door you're the one that has to walk through it morpheusthe matrix welcome to the bookwhen reading the table of contentsyou probably noticed the diversity of the topics we're about to cover the goal of introducing data science is to provide you with little bit of everything--enough to get you started data science is very wide fieldso wide indeed that book ten times the size of this one wouldn' be able to cover it all for each we picked different aspect we find interesting some hard decisions had to be made to keep this book from collapsing your bookshelfwe hope it serves as an entry point--your doorway into the exciting world of data science roadmap and offer the general theoretical background and framework necessary to understand the rest of this book is an introduction to data science and big dataending with practical example of hadoop is all about the data science processcovering the steps present in almost every data science project xvi