Dear UQLab As you are well aware, after developing a metamodel it is essential to check the surrogate model by the goodness-of-fit tests. Every reliable model shouldn’t suffer from the below problems: 1- Co-linearity 2-Heteroskedasticity 3-Non-normality of errors 4-Outliers Please guide me on…

Dear @ali , Thanks for the follow-up. Regarding the questions: I think the term colinearity means that some regressors are colinear. Thus, colinearity can be a problem if we have a regression setup, namely using OLS, with clearly defined regressors. That’s why I refer to PCE which can be formed in…

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