ResearchBenchmarksTime Series Generation on SPXTime Series Generation on SPXFollow2.804ACFNANSDE2.712482.736242.762.78376Feb 9, 2026Evaluation resultsMethodMethodLinksACFHurst IndexMarginal Distribution SimilarityWeighted ACFR2 ScoreNANSDE2026.022.804——1.404—SDE2026.022.762——1.43—RNN2026.022.717——1.34—fSDE2026.022.716——1.343—