Fig. 7From: Reduced-order modelling of parametric systems via interpolation of heterogeneous surrogatesResponse surface and the absolute error. a Linear interpolation of the Loewner representation. The overall relative error is \(2.4649 \times 10^{-2}\). b Spline interpolation of the Loewner representation. The overall relative error is \(6.0671 \times 10^{-3}\). c Linear interpolation of the pole-residue representation. The overall relative error is \(2.3485 \times 10^{-2}\)Back to article page