no code implementations • 18 Apr 2024 • Kislaya Ravi, Vladyslav Fediukov, Felix Dietrich, Tobias Neckel, Fabian Buse, Michael Bergmann, Hans-Joachim Bungartz
One of the main challenges in surrogate modeling is the limited availability of data due to resource constraints associated with computationally expensive simulations.
no code implementations • 25 Nov 2023 • Atul Agrawal, Kislaya Ravi, Phaedon-Stelios Koutsourelakis, Hans-Joachim Bungartz
Constrained optimization of the parameters of a simulator plays a crucial role in a design process.
1 code implementation • 20 Nov 2022 • Ionut-Gabriel Farcas, Benjamin Peherstorfer, Tobias Neckel, Frank Jenko, Hans-Joachim Bungartz
When training low-fidelity models, the proposed approach takes into account the context in which the learned low-fidelity models will be used, namely for variance reduction in Monte Carlo estimation, which allows it to find optimal trade-offs between training and sampling to minimize upper bounds of the mean-squared errors of the estimators for given computational budgets.
no code implementations • 3 Aug 2022 • Severin Reiz, Tobias Neckel, Hans-Joachim Bungartz
Training deep neural networks consumes increasing computational resource shares in many compute centers.
no code implementations • 25 Mar 2021 • Qinyu Zhuang, Juan Manuel Lorenzi, Hans-Joachim Bungartz, Dirk Hartmann
The first step is dimension reduction by projection-based method, and the second is the model reconstruction by Neural Network.
no code implementations • 25 Feb 2021 • Keefe Huang, Moritz Krügener, Alistair Brown, Friedrich Menhorn, Hans-Joachim Bungartz, Dirk Hartmann
Corresponding predictions of optimal meshes can be used as input for any mesh generation and CFD tool.