Simple Graph Heuristic Beats Generative Recommenders on 10 of 14 Benchmarks

A no-training graph heuristic beats generative recommenders on 10 of 14 benchmarks, exposing shortcut-solvable datasets. Relative NDCG@10 gains hit 44% on Amazon CDs. A no-training graph heuristic beat generative recommenders on 10 of 14 benchmarks,...