Fig. 7From: Constrained multi-fidelity surrogate framework using Bayesian optimization with non-intrusive reduced-order basisEvolution of the relative error at the theoretical optimal point for multiple runs. The mean error values are represented by purple continuous and dotted lines for the MF model and its trend, the OK by a red line, with their corresponding standard deviation (shaded areas) obtained from 40 independant LHS experiments for each \(\alpha \) value. Same LHS DoE is used for model comparisonBack to article page