Exercise:PCA and Whitening
From Ufldl
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==== Step 0b: Zero mean the data ==== | ==== Step 0b: Zero mean the data ==== | ||
| - | You should then center the data at zero by subtracting the | + | You should then center the data at zero by subtracting the per-example mean (separately for each example, compute the mean and subtract this value from that example). |
=== Step 1: Implement PCA === | === Step 1: Implement PCA === | ||
