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Efficient Learning of Accurate Surrogates for Simulations of Complex Systems
May 20, 2024, 4:42 a.m. | A. Diaw, M. McKerns, I. Sagert, L. G. Stanton, M. S. Murillo
cs.LG updates on arXiv.org arxiv.org
Abstract: Machine learning methods are increasingly used to build computationally inexpensive surrogates for complex physical models. The predictive capability of these surrogates suffers when data are noisy, sparse, or time-dependent. As we are interested in finding a surrogate that provides valid predictions of any potential future model evaluations, we introduce an online learning method empowered by optimizer-driven sampling. The method has two advantages over current approaches. First, it ensures that all turning points on the model …
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