ResearchBenchmarksCounterfactual Distribution Estimation on TWINS HeavyTails outcome (synthetic)Counterfactual Distribution Estimation on TWINS HeavyTails outcome (synthetic)Follow0.25Average W1 ErrorDecFM0.150.8251.52.175May 8, 2026Evaluation resultsMethodMethodLinksAverage W1 ErrorDecFM2026.050.25KDE2026.050.28DRMKSD2026.050.34DoubleGenimplementation=flow-ma...implementation=flow-matching2026.050.36INF2026.050.42TSE2026.052.75