pca-1 - black ---> www.astro.princeton.edu/~gk/A542/PCA.ppt
by Professor Gillian R. Knapp gk@astro.princeton.edu
pca-2 - yellow ---> myweb.dal.ca/~hwhitehe/BIOL4062/pca.ppt
by Hal Whitehead.
This is the class main url http://myweb.dal.ca/~hwhitehe/BIOL4062/handout4062.htm
pca.ppt - what is cov. matrix ----> hebb.mit.edu/courses/9.641/lectures/pca.ppt
by Sebastian Seung. Here is the main page of the course
http://hebb.mit.edu/courses/9.641/index.html
from BIIS_05lecture7.ppt ----> www.cs.rit.edu/~rsg/BIIS_05lecture7.ppt
by R.S.Gaborski Professor
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