Data Science e-book: first draft available for download

See below for an outdated HTML version; the PDF version is of much higher quality, proofread and with the most recent content. To download a copy, you must be a member. Click here to sign up and check all the benefits of membership. New random number generator: simple, strong and fast Lifetime value of an e-mail blast: much longer than you think Two great ideas to create a much better search engine Identifying the number of clusters: finally a solution Online advertising: a solution to optimize ad relevancy Example of architecture for AaaS (Analytics as a Service) Why and how to build a data dictionary for big data sets Hidden decision trees: a modern scoring methodology Approximate Solutions to Linear Regression Problems Preserving metric and score consistency over time and across clients Advertising: reach and frequency mathematical formulas Real Life Example of Text Mining to Detect Fraudulent Buyers Sales forecasts: how to improve accuracy while simplifying models? How could Amazon increase sales by redefining relevancy?