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#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
#machine learning Preprint Open access Oct 2026

Do Deep Ensembles Actually Capture Uncertainty in Graph Neural Networks?

While deep ensembles are widely considered to be the default method for uncertainty quantification in deep learning, their effectiveness for graph-structured data is often simply assumed based on successes in domains like computer vision. We investigate standard deep ensembles specifically for message-passing graph neu...

Pedro C. Vieira, Viacheslav Borovitskiy, Pedro Ribeiro · 0 citations
#machine learning Preprint Open access Oct 2026

SURF: Steering the Scalarization Weight to Uniformly Traverse the Pareto Front

Scalarization is widely used in multi-objective optimization owing to its simplicity and scalability. In many applications, the goal is to generate solutions that represent diverse user preferences, ideally with uniform coverage of the Pareto front (PF). However, uniformly sampling scalarization weights usually induces...

Liuyuan Jiang, Chentong Huang, Lisha Chen · 0 citations
#machine learning Preprint Open access Oct 2026

Quadratic Characterizations for Reachability Analysis of Neural Networks

Quadratic constraints (QCs) are widely used to characterize nonlinearities and uncertainties, but generic analytical characterizations can be conservative on bounded domains. This paper develops a framework for constructing verified quadratic characterizations of scalar relations in the two-dimensional real plane. Cand...

Elias Khalife, Mazen Farhood, Pierre-Loic Garoche · 0 citations

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Microsoft Research Blog Oct 12, 2026

Simulating student learning for better AI tutoring

StudentSim is a research system for evaluating and improving AI tutoring tools before they are tested with learners. It models how individuals may engage with tutors, giving feedback to improve tutor performance across subjects like chess, writing, and mathematics. The post Simulating student learning for better AI tutoring appeared first on Microsoft Research.

MIT News · Artificial Intelligence Oct 7, 2026

Discovering the value of humanistic inquiry

Students in MIT’s Concourse program delve deeply into the human condition, debate challenging questions, and learn to develop judgment about issues that can’t be quantified.

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