I have implemented PCA on training data and the result is ready. Now I want to use the same PCA on test. Is there any way to perform the same PCA on test as training in weka?
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$\begingroup$ What do you mean "test" here? Cases that did not participate in the PCA and for which you need to compute PC scores? $\endgroup$– ttnphnsApr 13, 2014 at 7:51
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$\begingroup$ the training data are which has class label and test do not. I have performed pca on training now, with the same parameter I wanna do it for test. for example if the first attribute in training is "0.2*h1+0.7*h2" I wanna have this attribute for test. $\endgroup$– PanizApr 14, 2014 at 13:55
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This is easily done by using batch filtering, that allows applying a filter to both a training and a test set in WEKA. Your only problem is that you will have to apply PCA to the training set again -- although you should get the same results if you make use of the same options.
answered Apr 14, 2014 at 19:00