Secondly, we analyzed the EIS spectrum from a symmetric solid oxide fuel cell with (Ba0.95La0.05)0.95FeO3- for the cathode material and samarium-doped ceria for the electrolyte . Following , we modeled the experimental impedance with a 2×ZARC model whose parameters are given in Table . After RR, the position of the DRT peak was well identified but its height was slightly underestimated (Figures Figure and S13 for 𝑁 = 10 𝑀), hence the large DRT error for RR 𝜀 , = 20.72% (Table ). Comparatively, the impedance error was negligible (𝜀̅ , = 0.91%, Table ). Then, the trained DNN remarkably reduced both errors (𝜀 , = 13.25% and 𝜀̅ , = 0.18%). Notably, all errors did not depend on 𝑁 = 𝑀, 10 𝑀, and 100 𝑀 (Tables and).