This video is gentle and motivated introduction to Principal Component Analysis (PCA). We use PCA to analyze the 2021 World Happiness Report published 2021 and discover what makes countries truly happy. :)
References:
- Scikit-Learn User Guide : [ Ссылка ]
- A Tutorial on Principal Component Analysis: [ Ссылка ]
- Andrew Ng Stanford Course: [ Ссылка ]
- Kaggle dataset: [ Ссылка ]
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Timestamps:
0:00 Intro
1:37 Projecting a point on a line
2:00 Optimization
3:27 First component
4:19 Second component
5:20 More generally ...
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Credit:
🐍 Manim and Python : [ Ссылка ]
🐵 Blender3D: [ Ссылка ]
🗒️ Emacs: [ Ссылка ]
🎹 Intro Music: Waltz of the Flowers - Tchaikovsky
🎹 Outro Music: Like That - Anno Domini Beats
This video would not have been possible without the help of Gökçe Dayanıklı.
![](https://i.ytimg.com/vi/FD4DeN81ODY/maxresdefault.jpg)