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15,964 papers

#machine learning Preprint Open access Oct 2026

MetaJoin: Adaptive Join Selections for Heterogeneous Tables

Joining heterogeneous tables requires different forms of correspondence, including exact agreement, syntactic transformation, semantic similarity, and entity-level matching. The appropriate join method is often unknown in advance, while running every candidate method incurs unnecessary cost. We introduce MetaJoin, a la...

Ning Wang, Sainyam Galhotra · 0 citations
#machine learning Preprint Open access Oct 2026

Infinitesimal Operator World Models: Finite-Sample Guarantees for Offline Reinforcement Learning

Continuous-time stochastic processes underlie many natural and engineered systems. In healthcare, autonomous driving, and industrial control, direct interaction with the environment is often unsafe or impractical, motivating offline reinforcement learning from historical data. However, there is limited statistical unde...

Nicolas Hoischen, Petar Bevanda, Max Beier et al. · 0 citations
#machine learning Preprint Open access Oct 2026

Second-Order Optimization with Asynchronous Curvature

Second-order methods make fast progress per iteration, but forming and factorizing the Hessian often dominates their wall-clock time. We study \emph{Split-Client}, a task-parallel design in which a curvature client factorizes Hessians in the background while a gradient client takes cubic-regularized steps with the most...

El Mahdi Chayti, Martin Jaggi · 0 citations
#machine learning Preprint Open access Oct 2026

Surrogate Graph Partitioning for Spatial Prediction

Spatial prediction refers to the estimation of unobserved values from spatially distributed observations. Although recent advances have improved the capacity to model diverse observation types, adoption in practice remains limited in industries that demand interpretability. To mitigate this gap, surrogate models that e...

Yuta Shikuri, Hironori Fujisawa · 0 citations
#machine learning Preprint Open access Oct 2026

Approximation of differential entropy in Bayesian optimal experimental design

Bayesian optimal experimental design provides a principled framework for selecting experimental configurations that maximize obtained information. In this work, we consider settings where the likelihood entropy is independent of the design or can be evaluated explicitly, which applies, e.g. to additive noise models wit...

Chuntao Chen, Tapio Helin, Nuutti Hyv\"onen et al. · 0 citations
#machine learning Preprint Open access Oct 2026

Fast localized urban microclimate emulator: wind and temperatures in unseen urban morphologies

Urban microclimate, encompassing wind and temperature fields shaped by building geometry, strongly affects building energy use, pedestrian wind comfort, pollutant dispersion, the urban heat island, and public health. Conventional Computational Fluid Dynamics (CFD) is computationally prohibitive for rapid assessments, w...

Shaoxiang Qin, Theodore Potsis, Dongxue Zhan et al. · 0 citations
#machine learning Preprint Open access Oct 2026

Data-Driven Stochastic Optimal Control in Reproducing Kernel Hilbert Spaces

This paper proposes a fully data-driven approach for optimal control of nonlinear control-affine systems represented by a stochastic diffusion. The focus is on the scenario where both the nonlinear dynamics and stage cost functions are unknown, while only a control penalty function and constraints are provided. To this...

Nicolas Hoischen, Petar Bevanda, Stefan Sosnowski et al. · 0 citations
#machine learning Preprint Open access Oct 2026

The Fourth Quadrant: A Stylized View of Benign Misfitting

Training error is what we can observe on a training set; test error is the quantity we care about. We study squared-error linear regression in a deterministic $(d+1)$-dimensional single-spike model. Each training vector has spike coordinate $\sqrt{\gamma}$, $\gamma>1$, and equal-norm, mutually orthogonal nuisance compo...

Gireeja Ranade, Anant Sahai · 0 citations
#machine learning Preprint Open access Oct 2026

FlowAWR: Online Adaptive Flow Reinforcement via Advantage-Weighted Rectification

Aligning generative flow models on continuous spaces via online reinforcement learning is constrained by intractable trajectory likelihoods. Existing density-approximated policy gradient methods rely on stochastic SDE samplers to construct tractable transition kernels, which introduce training-inference inconsistencies...

Zheming Fu, Ruizhe He, Wei Shang et al. · 0 citations
#machine learning Preprint Open access Oct 2026

VLA-FAIL: Efficient Task Failure Detection for Finetuned Vision-Language-Action Models

Vision-language-action models (VLAs) achieve state-of-the-art performance on many robotic manipulation tasks, yet they can still behave unpredictably in out-of-distribution scenarios. Runtime failure detection is therefore essential for the safe real-world deployment of VLAs.However, existing task failure detectors req...

Florian Seligmann, Emiliyan Gospodinov, Enes Ulas Dincer et al. · 0 citations
#machine learning Preprint Open access Oct 2026

Urban Power Grid Topology and Hierarchy Identification from Open Data

Understanding the complex topology and hierarchy of urban power grid is crucial for energy prognosis, power flow management, and system resilience analysis. However, detailed grid information remains largely proprietary. This information, nevertheless, is crucial especially for analyzing the last-mile distribution netw...

Shiliang Zhang, Sabita Maharjan, Alexey Vinel et al. · 0 citations
#machine learning Preprint Open access Oct 2026

Learning Transfers: Kan Extensions of Topological Invariants of Learned Representations

When a learned representation is reused for a new task, which of its structure should survive? A task is a small category, a change of task is a functor $J$, and the invariants of a trained representation form a functor $F$. The left Kan extension $\operatorname{Lan}_JF$ is the invariant that the source and the change...

Luciano Melodia · 0 citations

From tech blogs

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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.

MIT News · Artificial Intelligence Oct 23, 2026

Q&A: How AI came to model the “messy” human mind

Assistant Professor Benjamin Lindquist studies how engineers deliberately injected randomness into early AI, giving rise to deep-learning models that sometimes hallucinate.

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