> I'm aware that a PCA can help solve this problem, but there is a way to take into account multicollinearity
> in 3dRegAna (or other programs) in multiple regression?
There is nothing available in 3dRegAna that could handle multicollinearity. You may try PCA first with something like the following before running 3dRegAna:
[
cran.r-project.org]
> is there a method that allows to use independent bootstrapped regressions on input data (something
> similar to random trees generation)?
Unfortunately no.
Gang