Hello OpenTURNS users, I would like to get a simple form of a degre 1 Polynomial Chaos Expansion as, for instance: f(x1, x2, x3) = a x1 +b x2 + c x3 +d
It is known that Sobol indices can be calculated from the polynomial chaos. When I use ".getMetaModel()", I get a complex composite function and I can't connect Sobol indices to my inputs. My goal is to re-use this simple function afterwards. Could you help me with that? All the best, Lisa
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