whole bunch of we train with a whole bunch of real images we don't need any fake images for this so for every pair of real images we take a couple of random patches and then we look at the exif tags that are similar in this images and we train those things to say okay yes those are similar and the different ones we say no those are those are different so basically we train something like 80 different classifiers that says for every different for every single active tag is this going to be the same or is it going