> @ogrisel @GaelVaroquaux @agramfort I did some testing and it turns out
> that both parameters can help to equalize the outputs produced by both
> svd methods. On real data randomized svd might generate scores that
> significantly deviate from FA scores based on SVD. Setting n_iter to 3
> solves the problem, but also setting n_oversamples to e.g. 100 helps.
> Both can be combined like n_iter=1 and n_oversamples=20. We should
> probably expose these parameters because these values aren't supposed
> to be constants ...

Yes, but they are probably difficult to tune unless you really know what
you are doing. Can we expose only one of them (and figure out which one
matters most)?