Whitening
From Ufldl
(→2D example) |
(→ZCA Whitening) |
||
Line 86: | Line 86: | ||
When using ZCA whitening (unlike PCA whitening), we usually keep all <math>\textstyle n</math> dimensions | When using ZCA whitening (unlike PCA whitening), we usually keep all <math>\textstyle n</math> dimensions | ||
- | of the data, and do not try to reduce its dimension. | + | of the data, and do not try to reduce its dimension. Mapping to biology, ZCA whitening is also often thought of as approximating |
+ | the processing that is performed on an image by the retina in the eye. | ||
== Regularizaton == | == Regularizaton == |