Exercise:PCA and Whitening

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(Step 0a: Load data)
(Step 5: ZCA whitening)
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=== Step 5: ZCA whitening ===
=== Step 5: ZCA whitening ===
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Now implement ZCA whitening to produce the matrix <math>x_{ZCAWhite}</math>. Visualise <math>x_{ZCAWhite}</math> and compare it to the raw data, <math>x</math>. You should observe that whitening results in, among other things, enhanced edges.
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Now implement ZCA whitening to produce the matrix <math>x_{ZCAWhite}</math>. Visualise <math>x_{ZCAWhite}</math> and compare it to the raw data, <math>x</math>. You should observe that whitening results in, among other things, enhanced edges. Try varying epsilon (1, 0.1, 0.01) and see what you obtain.  
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Revision as of 08:37, 29 April 2011

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