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Topic: PCA C code contradictions
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shay@predixpharm.com

Posts: 4
Registered: 6/4/06
PCA C code contradictions
Posted: Jun 4, 2006 7:27 AM
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I have three seperate codes that run PCA. When I run my data through
them (or even a small synthetic data set of orthogonal variable
vectors) I get three different results.
The different codes are:
1. Accelrys Cerius2 version 4.11
2. http://astro.u-strasbg.fr/~fmurtagh/mda-sw/
3.
http://bonsai.ims.u-tokyo.ac.jp/~mdehoon/software/cluster/cluster.pdf

Can anyone explain why differences exist and more importantly which is
the "correct" one?




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