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cs.LG2026
Operator Surrogates
Christoph Schwab, Josephine Westermann, Jakob Zech
This chapter provides a mathematical introduction to operator surrogates, which are finite-parametric maps approximating complex (typically nonlinear) operators between infinite-di…
cs.LG2026
Performance of Neural and Polynomial Operator Surrogates
Josephine Westermann, Benno Huber, Thomas O'Leary-Roseberry +1
We consider the problem of constructing surrogate operators for parameter-to-solution maps arising from parametric partial differential equations, where repeated forward model eval…