R-code:
Here's the code for the Wed class: ZipCode.R
Example Data:
Graphical and text output for in-class example:
text files corresponding to the two plots above:
Err_4var_target.txt
Err_7var_target.txt
To review matrix derivatives, check out page 8 of Stanford Professor Andrew Ng's notes:
http://www.stanford.edu/class/cs229/notes/cs229-notes1.pdf
http://stanford.edu/class/cs229/section/cs229-linalg.pdf
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