Exercise:PCA and Whitening
From Ufldl
(→PCA, PCA whitening and ZCA implementation) |
(→Step 0: Load data) |
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[[File:raw_images.png|240px|alt=Raw images|Raw images]] | [[File:raw_images.png|240px|alt=Raw images|Raw images]] | ||
- | These patches are stored as column vectors <math>x^{(i)} \in \mathbb{R}^{196}</math> in the <math>196 \times 10000 matrix <math>x</math>. | + | These patches are stored as column vectors <math>x^{(i)} \in \mathbb{R}^{196}</math> in the <math>196 \times 10000</math> matrix <math>x</math>. |
=== Step 1: Implement PCA === | === Step 1: Implement PCA === |