Best practices in feature engineering
In this section, we have figured out some good practices while performing the feature engineering on your available data. Some best practices of machine learning were described in Chapter 2, Machine Learning Best Practices. However, those were too general for the overall machine learning state of the arts. Those best practices, of course, would be useful in the feature engineering, too. Moreover, we will provide more concrete examples concerning feature engineering in the following sub-sections.
Understanding the data
Although the term feature engineering is more technical, however, it is an art that helps you to understand where the features come from. Now some vital questions evolve too, which need to be answered ...