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- W4375958696 abstract "To balance quality and cost, various domain areas of science and engineering run simulations at multiple levels of sophistication. Multi-fidelity active learning aims to learn a direct mapping from input parameters to simulation outputs at the highest fidelity by actively acquiring data from multiple fidelity levels. However, existing approaches based on Gaussian processes are hardly scalable to high-dimensional data. Deep learning-based methods often impose a hierarchical structure in hidden representations, which only supports passing information from low-fidelity to high-fidelity. These approaches can lead to the undesirable propagation of errors from low-fidelity representations to high-fidelity ones. We propose a novel framework called Disentangled Multi-fidelity Deep Bayesian Active Learning (D-MFDAL), which learns the surrogate models conditioned on the distribution of functions at multiple fidelities. On benchmark tasks of learning deep surrogates of partial differential equations including heat equation, Poisson's equation and fluid simulations, our approach significantly outperforms state-of-the-art in prediction accuracy and sample efficiency." @default.
- W4375958696 created "2023-05-10" @default.
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- W4375958696 date "2023-05-07" @default.
- W4375958696 modified "2023-09-26" @default.
- W4375958696 title "Disentangled Multi-Fidelity Deep Bayesian Active Learning" @default.
- W4375958696 doi "https://doi.org/10.48550/arxiv.2305.04392" @default.
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