Python Feature Engineering Cookbook

How it works...

The pandas library has plenty of built-in operations to compare one feature or a subset of features to a single reference variable. In this recipe, we used the pandas sub() and div() methods to determine the difference or the ratio between two variables or a subset of variables and one reference feature.

First, we loaded the Breast Cancer dataset from scikit-learn. Next, we subtracted one variable from another. To do this, we applied the sub() method to a pandas Series with the first variable, passing the second pandas Series with the second variable within the method, which returned a third pandas Series with the second variable subtracted from the first one. To divide one variable from another, we used the div() method, ...