Fig. 9From: A DeepONet multi-fidelity approach for residual learning in reduced order modelingComparison between POD (0.999 energy threshold), DeepONet, and multi-fidelity DeepONet in terms of relative error in the parametric domain. The vertical dotted lines indicate the location of the high-fidelity samples. The 2 dashed vertical lines indicate the test parameters represented in Figs. 10 and 11Back to article page