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Behavioral models such as macromodels, surrogate models, metamodels, and response surface models have many applications in diverse research domains such as aerodynamics , hydrology , mechanical engineering , and many more. When considering the design flow of electronic devices, these models are often used to characterize the time- or frequency- dependent behavior of an electronic component while taking all electromagnetic (EM) phenomena into account: crosstalk, attenuation, dispersion, and coupling effects for example . Such models are of crucial importance for efficient design space exploration, design optimization, and sensitivity analysis , . A key advantage is that they are calculated independently of the device's physics and that they are valid for over a wide range of design variables, taking into account multiple geometrical layout or substrate features. Additionally, the models can easily be linked together in a model cascade.