Exercise:PCA in 2D
From Ufldl
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| - | In this exercise you will implement PCA and PCA whitening, as described in the notes, to generate the images displayed in the notes yourself. You will build on the starter code that has been provided to you at | + | In this exercise you will implement PCA and PCA whitening, as described in the notes, to generate the images displayed in the notes yourself. You will build on the starter code that has been provided to you at [http://ufldl.stanford.edu/wiki/resources/FILENAME]. You need only write code at the places indicated by "YOUR CODE HERE" in the files. The only file you need to modify is <tt>pca_2d.m</tt>. Implementing this exercise will make the next exercise significantly easier to understand and complete. |
=== Step 0: Load data === | === Step 0: Load data === | ||
