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17,191 papers

#machine learning Preprint Open access Nov 2026

Beyond Foundation Models: PFN Priors Improve Tabular Hyperparameter Optimization

Synthetic priors have so far served one purpose: pretraining tabular foundation models. We ask whether the same priors can improve conventional tabular models, which are trained from scratch on each dataset. We propose PriorTune, a method that meta-tunes hyperparameter configurations on synthetic tasks alone. Offline,...

Artem Chistyakov, Renat Sergazinov, Artem Babenko · 0 citations
#machine learning Preprint Open access Nov 2026

PAC Learning with Multiple Correct Answers

We study PAC learning when each example comes with a set of at most $\ell$ correct labels and a prediction is correct if it belongs to this set. Training may reveal the full set, only whether a proposed label is correct (bandit feedback), or one correct label chosen by a demonstrator (emonstrations). Our main finding...

Steve Hanneke, Farnam Mansouri, Alireza F. Pour et al. · 0 citations
#machine learning Preprint Open access Nov 2026

Do Ray-Traced Cities Make a Better Channel Prior for an Unseen Site? A Pre-Registered Study in Simulation, and a Test on Measured Channels that Reverses It

Channel estimators at a newly deployed base station usually start from 3GPP stochastic channel models, which describe no particular street. We ask whether a channel prior pooled from many ray-traced cities serves an unseen site better than the 3GPP CDL models, and whether learned estimators make the difference. With Si...

Krish Patel · 0 citations
#machine learning Preprint Open access Nov 2026

Towards an Optimal Control Foundation of Early Exits - Turnpikes and ResNets

The feed-forward propagation through neural networks is crucial for training and inference. To trade off efficiency and accuracy, it has been proposed to consider intermediate outputs of hidden states as data-dependent regularization during training and, ultimately, as early-exits during inference. In this work, we ana...

Jens P\"uttschneider, Simon Heilig, Asja Fischer et al. · 0 citations
#machine learning Preprint Open access Nov 2026

Beyond Multi-Index Models: Learning Intersections of Degree-2 PTFs

We give an algorithm for PAC learning intersections of $k$ degree-2 polynomial threshold functions over $R^d$ under a Gaussian distribution. Our algorithm achieves classification error $\epsilon$ using $d^{O(k)}2^{O_k(\log^3(1/\epsilon))}$ time and samples, improving over the $d^{O(k^2/\epsilon^2)}$ running time of the...

Ilias Diakonikolas, Daniel M. Kane, Mingchen Ma et al. · 0 citations
#machine learning Preprint Open access Nov 2026

Dual-VaDE: Efficient and Robust Prototype Learning via Variational Dual-Domain Mixture Priors

In this paper, we propose Dual-VaDE, an unsupervised generative framework for learning interpretable anatomical prototypes from unlabeled medical images. In contrast to previous variational methods that rely on a single spatial latent code, which often entangles global geometry with local textures and fails to capture...

Wugeng Zheng, Song Wang, Jian Wang · 0 citations
#machine learning Preprint Open access Nov 2026

Effects of Parton Pair Correlations on Direct-Photon Yields and Elliptic Flow in Heavy-Ion Collisions

Direct photons escape heavy-ion collisions with little rescattering, carrying information from the full emission history. Yet describing the measured direct-photon yield and the sizable elliptic flow $v_2$ together remains a long-standing challenge. Here we explore how correlations between emitting partons may affect b...

Xingjian Lu, Shuzhe Shi · 0 citations
#machine learning Preprint Open access Nov 2026

Positional Encoding is All You Need for Scalable Equivariance Constraint Relaxation

Equivariant neural networks incorporate known symmetries of the data, such as permutations, rotations, or translations, directly into their architecture, often improving sample efficiency and generalization. However, strict equivariance can make optimization difficult, for example, when the data only approximately sati...

Hagay Michaeli, Haggai Maron, Daniel Soudry · 0 citations
#machine learning Preprint Open access Nov 2026

Federated Transfer Learning for Medical Image Classification under Mixed Skew

Deep learning in medical imaging is constrained by data scarcity and by privacy regulations that make centralizing patient data across institutions impractical. Federated Learning (FL) addresses these constraints by keeping data local, but its distributed nature exposes training to strong statistical heterogeneity. Mul...

Alexandre G. Leclercq, S\'ebastien Bougleux, Aur\'elien Corroyer-Dulmont et al. · 0 citations
#machine learning Preprint Open access Nov 2026

DRAP: Dynamics-Risk Adaptive Plasticity for Continual Learning in Physical AI

Continual learning in physical AI differs from conventional continual learning because small per-step policy errors can accumulate over a trajectory. Each deviation may move the agent outside the training distribution, increase subsequent prediction errors, and ultimately cause closed-loop task failure. This work intro...

Oswaldo Ludwig · 0 citations
#machine learning Preprint Open access Nov 2026

Unifying and Beyond the Theory of Pervasive Capability Degradation in LLM Post-training SFT from Feature Interference

Pervasive Capability Degradation (PCD) refers to the phenomenon in which supervised fine-tuning (SFT), while adapting a large language model (LLM) to a target task, often erodes the general capabilities acquired during pre-training. Prevailing explanations attribute PCD to macroscopic distribution shift and therefore l...

Hang Chen, Jiaying Zhu, Wenya Wang · 0 citations

From tech blogs

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Microsoft Research Blog Nov 3, 2026

Learn the rules: The hacker mindset

Research Manager Mike Walker reflects on a career spanning hacker culture, cybersecurity, and AI, sharing lessons about trust, teamwork, leadership, and why solving difficult problems requires curiosity, judgment, agility—and an understanding of the rules. The post Learn the rules: The hacker mindset appeared first on Microsoft Research.

Google DeepMind Blog Nov 3, 2026

Agentic cheminformatics with Google Antigravity

Learn how Google Antigravity and our Cheminformatics Skills accelerate drug discovery workflows, search compounds, and propose novel rigidified macrocycles.

MIT News · Artificial Intelligence Oct 28, 2026

Making machines that can listen

Professor Paris Smaragdis develops computers with superhuman hearing for applications like speech recognition, music understanding, and environmental monitoring.

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