Thanks for your question! As long as you can compute the probability of each item being shown (regardless of whether it's uniform random or through your algori

Thanks for your question! As long as you can compute the probability of each item being shown (regardless of whether it's uniform random or through your algorithm) to each user, the method still applies. While it does seem more palatable to just show a maximum of X% uniformly random items to all users, the computation of p(y|x) can get a bit hairy for any item y, because now it is a product of a uniform distribution and your stochastic ranking algorithm. If you _can_ compute that, you'd be fine.