I was pointing out that it's not externally controlled. If you want a full understanding of the algorithm, you'll probably need to read the paper. The supplemen

I was pointing out that it's not externally controlled. If you want a full understanding of the algorithm, you'll probably need to read the paper. The supplementary material and the full paper go into this in detail. The supplementary material is a pdf, which I can email to you if you want to see it.