Ax \c{S}. \.Ilker Birbil, Sinan Y{\i}ld{\i}r{\i}m, Samet \c{C}opur, M. Hakan Aky\"uz 2/17/2026

Learning with Subset Stacking

Regression algorithm using subset stacking for heterogeneous data with local predictors trained on random input-space subsets.

Ax Subhojyoti Mukherjee, Anusha Lalitha, Kousha Kalantari, Aniket Deshmukh, Ge Liu, Yifei Ma, Branislav Kveton 2/17/2026

Optimal Design for Human Preference Elicitation

Optimal design methods for efficient human preference elicitation to reduce annotation costs in preference learning models.

Ax Federico Errica, Henrik Christiansen, Viktor Zaverkin, Mathias Niepert, Francesco Alesiani 2/17/2026

Adaptive Width Neural Networks

Technique to learn unbounded neural network layer width during training without manual hyperparameter selection.

Ax Sophia Sklaviadis, Thomas Moellenhoff, Andre Martins, Mario Figueiredo 2/17/2026

Fenchel-Young Variational Learning

Introduces Fenchel-Young losses as generalizations of KL divergence for variational learning methods.

Ax Zichen Liu, Wei Zhang, Christof Sch\"utte, Tiejun Li 2/17/2026

Riemannian Denoising Diffusion Probabilistic Models

Riemannian Denoising Diffusion Probabilistic Models for learning distributions on submanifolds without requiring explicit geodesic information.