ResearchBenchmarksDistribution-on-distribution regression over graphs on Weather2 Real-world (Canada Weather Stats) (test)Follow2.642-Wasserstein DistanceGen-GSNN2.49043.50024.515.5198May 20, 2026Evaluation ResultsMethodMethodLinks2-Wasserstein DistanceGen-GSNNRestriction map=GeneralRestriction map=General2026.052.64MLP2026.053.23O(d)-GSNNRestriction map=O(d)Restriction map=O(d)2026.053.41Diag-GSNNRestriction map=DiagonalRestriction map=Diagonal2026.053.92O(d)-NSDRestriction map=O(d)Restriction map=O(d)2026.054.43GCN2026.054.74Diag-NSDRestriction map=DiagonalRestriction map=Diagonal2026.055.05Gen-NSDRestriction map=GeneralRestriction map=General2026.056.38