Shapelets is a business services company based in Spain, specializing in research and development within the field of data science and analytics. Founded in 2018, the company employs between 11 and 50 individuals and has reported revenue of approximately $953,000. Shapelets focuses on providing solutions that enable organizations to uncover hidden insights through data analysis and visualization. Their published content includes a case study on forecasting energy pricing, which illustrates the application of their platform in predicting energy prices by analyzing historical data in conjunction with energy generation metrics. This eBook is tailored for data scientists, data engineers, and business users interested in building and deploying data models. Shapelets emphasizes the use of traditional regression error metrics to evaluate model performance, such as Mean Squared Error (MSE) and Mean Absolute Error (MAE), demonstrating their commitment to providing robust analytical methodologies for complex data challenges.