Figure 6
Example of sequential sampling in parameters \(g^{(1)}\) and \(g^{(2)}\). The black points represent the computed root macromodels at each stage of the iterative procedure. The gray points in the design space are used to verify the accuracy of the root macromodels interpolation, whereas the white ones are the points where new root macromodels will be computed. (a) Represents the initial sampling grid; (b,c) Show the evaluation of the parametric baseband macromodel at the center of the different subregions in the first and second iteration respectively; (d) illustrates the final sampling grid.
