ResearchBenchmarksEigenfunction recovery on OU2D ay = 4 N=500 (test)Eigenfunction recovery on OU2D ay = 4 N=500 (test)Follow0.977SubR2CV+RFF0.749240.808370.86750.92663Apr 20, 2026Evaluation resultsMethodMethodLinksSubR2CV+RFFCV kernel=Matérn-3/2,...CV kernel=Matérn-3/2, CV sigma=61.62026.040.977Uni+RFFprff=300prff=3002026.040.766Uni+Nysp=60p=602026.040.758