Feature Engineering: Remove Redundant Features

In this lesson, we start with the encoded Telco dataset, where we have 31 features and a target. Each of the 7,043 records describes a customer’s subscription details. Now we must identify and remove any features that are redundant by analyzing the relationships between them.

Pairwise correlation

A pairwise correlation matrix is a great way to identify interfeature dependencies. It’s essentially a table describing the correlation ...