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machine learning

17,191 papers

#machine learning Preprint Open access Oct 2026

From Uncertain Judgments to Calibrated Rankings: Conformal Elo Estimation for LLM Evaluation

Evaluating new large language models typically requires costly human annotation campaigns at scale. LLM-as-a-judge offers a cheaper alternative, but judge scores carry systematic errors -- such as position bias, self-preference, or intransitivity -- that can strongly miscalibrate the resulting rankings. We quantify the...

Bora Kargi, David Salinas · 0 citations
#machine learning Preprint Open access Oct 2026

Neural networks become centroid classifiers when trained on heavily corrupted inputs

Learning from imperfect data is a central theme in machine learning, connecting practical questions of robustness to fundamental questions of learnability. Here we examine attribute noise: learning from corrupted inputs while keeping the labels intact, a setting that has received considerably less analytical attention...

Justin Tahmassebpur, Asadullah Bhuiyan, Hyejin Kim et al. · 0 citations
#machine learning Preprint Open access Oct 2026

Joint user-item allocation for e-commerce marketing campaigns

Web platforms run many marketing campaigns at once, and for each one they must decide which products to promote and which users to target. The best users depend on the products, and the best products on the users. The campaigns also compete with one another, because each user and each item may belong to only one of the...

Maja Lindstr\"om, Natalija Glisovic, Jan von Pichowski et al. · 0 citations
#machine learning Preprint Open access Oct 2026

Transient Amplification in Cascaded Gradient Methods: Exact Minimax Laws and Tracking without Resonance

Leader-follower gradient iterations, including bilevel and two-time-scale methods, can exhibit large finite-time excursions despite asymptotic stability. For cascaded iterations with block matrix J = [[A,0],[C,D]], symmetric diagonal blocks of norm at most gamma < 1, and coupling norm at most c, we prove an exact, dime...

Ahanaf Hasan Ariq, Davide Wiest · 0 citations
#machine learning Preprint Open access Oct 2026

Approaching I/O-optimality for Approximate Attention

We revisit the I/O complexity of attention in large language models. Given query-key-value matrices $Q,K,V\in\mathbb{R}^{n\times d}$, and a machine with fast memory size $M$, the goal is to compute the "attention matrix" $A=\text{softmax}(Q K ^{\top}/\sqrt{d}) V$ with the minimal number of data transfers between fast a...

P\'al Andr\'as Papp, Aleksandros Sobczyk, Anastasios Zouzias · 0 citations
#machine learning Preprint May 2026

Regret-Based $(\epsilon,\delta)$-optimal Stopping Criteria for Bayesian Optimization

This work presents provably tighter instantaneous regret bounds for GP upper confidence bound (GP-UCB) at any given iteration and proposes stopping criteria for GP-UCB based on this tighter bound that ensures an $\epsilon$-optimal solution with high probability $1-\delta$ upon termination.

Hao-Wei Wang, Jingyi Wang, Qi-Yu Wei · 0 citations
#machine learning Preprint Open access Oct 2026

Tabular Foundation Models for Credit Risk Prediction: A Dedicated Review and Empirical Comparison

Predictive models are central to credit risk management, where the accuracy of default-probability and loss estimates affects the profitability of lending and the stability of the financial system. Decades of benchmarking research have consolidated the state of the art, with gradient-boosting models often representing...

Bart Baesens, Andreas Goethals, Stefan Lessmann et al. · 0 citations
#machine learning Preprint Open access Oct 2026

NodeSyn: Socially Aligned Synthetic Data for AI Evaluation

Recent advancements in generative AI facilitate large-scale synthetic data generation for model evaluation. However, without targeted approaches, these datasets often lack the sociotechnical nuance required for sensitive domains. We introduce NodeSyn, a methodology that pairs a fine-tuned taxonomy generator (TaG) with...

Qazi Mamunur Rashid, Xuan Yang, Zhengzhe Yang et al. · 0 citations
#machine learning Preprint Open access Oct 2026

U-STS-LLM: A Unified Spatio-Temporal Steered Large Language Model for Traffic Prediction and Imputation

Accurate spatio-temporal cellular traffic analysis is fundamental to the reliable operation of modern mobile networks, as it underpins load forecasting for congestion avoidance and missing-data imputation for continuity despite transmission errors. While deeply connected, forecasting and imputation have historically ev...

Yichen Zhang, Yiyang Ni, Pengcheng Xia et al. · 0 citations
#machine learning Preprint Open access Oct 2026

Generalized Wasserstein Flow Matching: Nested Couplings for Point Cloud Generation

We formulate flow matching on probability measures over probability measures. Directly from the Wasserstein-on-Wasserstein (WoW) continuity equation, we show that admissible nested outer and inner couplings induce a valid metameasure flow and non-local velocity field. Validity requires neither optimal plans nor a smoot...

Moritz Piening, Richard Duong, Gabriele Steidl · 0 citations
#machine learning Preprint Open access Oct 2026

VLMShield: Efficient and Robust Defense of Vision-Language Models against Malicious Prompts

Vision-Language Models (VLMs) face significant safety vulnerabilities from malicious prompt attacks due to weakened alignment during visual integration. Existing defenses suffer from efficiency and robustness. To address these challenges, we first propose the Multimodal Aggregated Feature Extraction (MAFE) framework th...

Peigui Qi, Kunsheng Tang, Yanpu Yu et al. · 0 citations
#machine learning Preprint Open access Oct 2026

Heterogeneous Agent Collaborative Reinforcement Learning

We introduce Heterogeneous Agent Collaborative Reinforcement Learning (HACRL), a new Reinforcement Learning from Verifiable Reward (RLVR) problem that addresses the inefficiencies of isolated multi-agent on-policy optimization. HACRL enables collaborative optimization with independent execution: heterogeneous agents sh...

Zhixia Zhang, Zixuan Huang, Gongxun Li et al. · 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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