PCA Clearly Explained -When, Why, How To Use It and Feature Importance: A Guide in Python

In this post, I explain what PCA is, when, and why to use it, and how to implement it in Python using scikit-learn. Also, I explain how to get the feature importance after a PCA analysis.

Serafeim Loukas, PhD
Geek Culture
Published in
7 min readJul 2, 2021

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Handmade sketch made by the author.

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Serafeim Loukas, PhD
Geek Culture

Data Scientist @ Natural Cycles (Switzerland). PhD, MSc, M.Eng. Bespoke services on demand