PhotoStructure has image comparison heuristics that is used for deduping, but would enable pairwise similarity grouping. I'd tried some transfer learning in the

PhotoStructure has image comparison heuristics that is used for deduping, but would enable pairwise similarity grouping. I'd tried some transfer learning in the past to rank photos, but found it to be unusably noisy. I'll be trying again, though, with some new approaches. Fwiw, your PhotoStructure library has a carefully designed schema to let SQLite queries like this be trivial. It's an interesting idea to let users pick bests out of near duplicates (and maybe prompt the user to workthrough this UI flow on album creation). I've put it on my to-do list!