arXiv Statistics ML

Empowering Bayes with sources of uncertainty: from confidence modelling to sparse estimation

The paper introduces Sources of Uncertainty (SoU) inference, a framework that extends Bayesian inference by allowing heterogeneous confidence to be encoded across model components. This selective treatment controls the uncertainty retained in each component and its propagation, yielding Empirical Bayes and profiling-type inference as special cases. The authors also present a general method for inducing sparsity, demonstrating its application in linear and logistic regression and in Bayesian neural networks for self‑pruning.

arXiv Machine Learning
Aug 28

A Flexible Empirical Bayes Approach to Generalized Linear Models, with Applications to Sparse Logistic Regression

The paper presents a tuning‑free empirical Bayes framework for Bayesian generalized linear models that uses a novel mean‑field variational inference algorithm. By estimating the prior within the VI procedure and optimizing the posterior mean directly, the method reduces optimization complexity and supports scalable solvers like L‑BFGS and stochastic gradient descent. Applied to sparse logistic regression, the approach shows superior predictive performance compared to existing methods.

By Dongyue Xie, Matthew Stephens
arXiv Machine Learning
Oct 12

How Well Do Prior-Data Fitted Networks Amortize Bayesian Inference?

The paper investigates how well Prior-Data Fitted Networks (PFNs) approximate Bayesian posterior predictive distributions (PPDs). By decomposing deployment error into prior, context, and amortization components, the authors find that PFNs generally recover the target PPD accurately, but residual amortization errors remain in rare settings, leading to disagreement among independently pretrained models. They demonstrate that Bayesian model averaging can consistently reduce this uncertainty and improve predictions, even matching full-size TabICLv2 models.

By Manuel H\"ulskamp, Julius Kobialka, Emanuel Sommer, Thomas Nagler, David R\"ugamer
arXiv Machine Learning
Jun 15

Implicit Variational Rejection Sampling

arXiv:2606. 14235v1 Announce Type: new Abstract: Variational Inference (VI) is a fundamental inference technique in Bayesian machine learning for approximating complex posterior distributions.

By Jian Xu, Shigui Li, Wei Chen, Jiacheng Li, Zhiqi Lin, Delu Zeng, Xinghao Ding, John Paisley, Qibin Zhao
arXiv Machine Learning
Jul 27

Simulation-Based Empirical Bayes

arXiv:2607. 21843v1 Announce Type: cross Abstract: Empirical Bayes (EB) performs simultaneous inference across many related latent variables.

By Xinwei Shen, Diana Cai, Cheng Zhang, David M. Blei