Do Bayesian Neural Networks Need To Be Fully Stochastic?
Not on the map. Why?
Abstract (arXiv)
We investigate the benefit of treating all the parameters in a Bayesian neural network stochastically and find compelling theoretical and empirical evidence that this standard construction may be unnecessary. To this end, we prove that expressive predictive distributions require only small amounts of stochasticity. In particular, partially stochastic networks with only n stochastic biases are universal probabilistic predictors for n-dimensional predictive problems. In empirical investigations, we find no systematic benefit of full stochasticity across four different inference modalities and eight datasets; partially stochastic networks can match and sometimes even outperform fully stochastic networks, despite their reduced memory costs.
Key facts. Cited by 63 papers in the map (data through 7 Oct 2026). Builds on 38 of its 69 references that are in the map. First posted on arXiv 11 Nov 2022.
Builds on
38 of 69 references.
References · 38
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- 2018Overpruning in Variational Bayesian Neural Networkscited by 21
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- 2021Wide Mean-Field Variational Bayesian Neural Networks Ignore the Datacited by 7
- 2021Spatial-Temporal-Fusion BNN: Variational Bayesian Feature Layercited by 1
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Citing papers per year: 2023: 13; 2024: 24; 2025: 21; 2026: 5.
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