Before revision:  Even though there are no prior approaches that are directly applicable to the UPLproblem, we evaluate the STAM architecture in comparison to some unsupervised and self-supervised deep learning approaches adapted in the UPL context .
After revision:  Even though there are no prior approaches that are directly comparable to UPL, we compare the STAM architecture in comparison to some unsupervised and self-supervised deep learning approaches adapted in the UPL context .