A Priori Estimates of the Population Risk for Two-layer Neural Networks
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Abstract (arXiv)
New estimates for the population risk are established for two-layer neural networks. These estimates are nearly optimal in the sense that the error rates scale in the same way as the Monte Carlo error rates. They are equally effective in the over-parametrized regime when the network size is much larger than the size of the dataset. These new estimates are a priori in nature in the sense that the bounds depend only on some norms of the underlying functions to be fitted, not the parameters in the model, in contrast with most existing results which are a posteriori in nature. Using these a priori estimates, we provide a perspective for understanding why two-layer neural networks perform better than the related kernel methods.
Key facts. Cited by 76 papers in the map (data through 7 Oct 2026). First posted on arXiv 15 Oct 2018.
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Citing papers per year: 2021: 18; 2022: 13; 2023: 17; 2024: 13; 2025: 7; 2026: 8.
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