"Request to describe details of PCA"

restuar

Hello. I used PCA in my text mining problem. I am writing the report and my adviser tells me that I need to report the following: kind of rotation (e.g. varimax) and the results of the kaiser-meyer-olkin (kmo) test and bartlett's test of sphericity. In previous posts, I saw that the PCA in rapidminer does not do rotations. May I know in general how is PCA computed in rapidminer? Hoping for a quick response. Thank you.

MariusHelf

Hi,

for such detailed questions I would suggest to have a look directly at the source code, because the chances that the one who implemented the PCA looks into the forums are quite low. You'll find it in the method doWork() of class com.rapidminer.operator.features.transformation.PCA
. Here is a manual on importing the code into eclipse: http://rapid-i.com/content/view/25/48/lang,en/

Best, Marius