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PAC Learnability in the Presence of Performativity

arXiv:2510.08335v1 Announce Type: new Abstract: Following the wide-spread adoption of machine learning models in real-world applications, the phenomenon of performativity, i.e. model-dependent shifts in the test distribution, becomes increasingly prevalent. Unfortunately, since models are usually trained solely based on samples…

Optimal Stopping in Latent Diffusion Models

arXiv:2510.08409v1 Announce Type: new Abstract: We identify and analyze a surprising phenomenon of Latent Diffusion Models (LDMs) where the final steps of the diffusion can degrade sample quality. In contrast to conventional arguments that justify early stopping for numerical stability,…

TiAda: A Time-scale Adaptive Algorithm for Nonconvex Minimax Optimization

arXiv:2210.17478v2 Announce Type: replace-cross Abstract: Adaptive gradient methods have shown their ability to adjust the stepsizes on the fly in a parameter-agnostic manner, and empirically achieve faster convergence for solving minimization problems. When it comes to nonconvex minimax optimization, however,…

Empirical evaluation of normalizing flows in Markov Chain Monte Carlo

arXiv:2412.17136v2 Announce Type: replace-cross Abstract: Recent advances in MCMC use normalizing flows to precondition target distributions and enable jumps to distant regions. However, there is currently no systematic comparison of different normalizing flow architectures for MCMC. As such, many works…

Permutation-Invariant Spectral Learning via Dyson Diffusion

arXiv:2510.08535v1 Announce Type: new Abstract: Diffusion models are central to generative modeling and have been adapted to graphs by diffusing adjacency matrix representations. The challenge of having up to $n!$ such representations for graphs with $n$ nodes is only partially…

Rethinking Losses for Diffusion Bridge Samplers

arXiv:2506.10982v2 Announce Type: replace-cross Abstract: Diffusion bridges are a promising class of deep-learning methods for sampling from unnormalized distributions. Recent works show that the Log Variance (LV) loss consistently outperforms the reverse Kullback-Leibler (rKL) loss when using the reparametrization trick…