For PLS does my Response (Y) need to be Normal? I’m wondering whether I need to use my transformed Y or is it OK to use the measured data with no transformation? Thanks.
No need to be normal and no need transformation .
PLS is totally different algorithm with Least Square algorithm .
No need to be normal and no need transformation .
PLS is totally different algorithm with Least Square algorithm .
But on the other hand, the Y variable cannot be binary or categorical, PLS doesn't work well that way (although I have done it).
Yes. It is true. SAS will do it for you . you don't need to do anything.
" be centered and scaled" is a part of PLS algorithm .
@Daisy2 wrote:
Thanks, I see that my X's need to be centered and scaled - is that right? If so, how do I do that?
They don't "need to be" scaled, but that's usually the way PLS is run. However, there are valid reasons why you might not want to scale the x-variables in some scenarios. So PROC PLS gives you the choice of using scaling, which is the default, or not scaling, which is the NOSCALE option.
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