ResearchBenchmarksPDE Solving on 2D Darcy flow triangular notch domainPDE Solving on 2D Darcy flow triangular notch domainFollow0.64Relative L2 ErrorFUNCATTN0.35282.29144.236.1686May 29, 2026Evaluation resultsMethodMethodLinksRelative L2 ErrorFUNCATTN2026.050.64MWT2026.050.87WNOreproduction=true, par...reproduction=true, parameter budget=comparable2026.050.92POD-DeepONet2026.051DeepONet2026.052.64dgFNO+2026.057.82