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data science

2,380 papers

#machine learning Preprint Open access Oct 2026

Exact Dynamics and Finite-Sample Trajectory Recovery of Linear Recursive Feature Machines

Recursive feature machines (RFMs) learn representations of data by alternating between fitting a predictor to a dataset and updating features of that predictor using the average gradient outer product (AGOP). Connections between AGOPs and feature learning in neural networks motivate linear RFMs as a simple setting for...

Andrew Cheng, Bobak T. Kiani, Yue M. Lu et al. · 0 citations
#machine learning Preprint Open access Oct 2026

FedRSPO+: A Heterogeneity-aware Algorithm for Decision-focused Federated Learning

Decision-focused learning (DFL) trains predictive models for downstream optimization, but existing methods largely assume centralized data. In cross-silo settings, federated learning offers a natural alternative, yet standard federated methods optimize prediction over decision quality and do not address heterogeneity i...

Konstantinos Ziliaskopoulos, Alexander Vinel, Jiaqi Wang · 0 citations
#machine learning Preprint Open access Oct 2026

The Best Optimizer Depends on Batch Size

A plethora of new adaptive optimizers are designed to efficiently estimate and use minibatch gradient statistics to shape parameter updates, but they are typically benchmarked at a single batch size. Hyperparameter scaling rules promise to preserve performance as batch size and gradient noise change, suggesting that th...

Xingyu Dang, Kaiyue Wen, Sadhika Malladi · 0 citations
#artificial intelligence Preprint Open access Oct 2026

The Metagame of Interpretability and Meta-Attributions

How can an arbitrary attribution method be generalized from first principles to capture interactions? We answer this with the metagame, a conceptual framework for quantifying second-order interaction effects of model explanations. We cast the attribution value $\phi_i$ of feature $i$ as a cooperative game among the oth...

Hubert Baniecki, Przemyslaw Biecek, Fabian Fumagalli · 0 citations
#artificial intelligence Preprint Open access Oct 2026

BONSAI: Bayesian Optimization with Natural Simplicity and Interpretability

Bayesian optimization (BO) is a popular technique for sample-efficient optimization of black-box functions. In many applications, the parameters being tuned come with a carefully engineered default configuration, and practitioners only want to deviate from this default when necessary. Standard BO, however, does not aim...

Samuel Daulton, David Eriksson, Maximilian Balandat et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Multiparameter Uncertainty Mapping in Quantitative Molecular MRI using a Physics-Structured Variational Autoencoder (PS-VAE)

Quantitative imaging methods, such as magnetic resonance fingerprinting (MRF), aim to extract interpretable pathology biomarkers by estimating biophysical tissue parameters from signal evolutions. However, the pattern-matching algorithms or neural networks used in such inverse problems often lack principled uncertainty...

Alex Finkelstein, Ron Moneta, Or Zohar et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Order-Optimal Sample Complexity of Rectified Flows

Recently, flow-based generative models have shown superior efficiency compared to diffusion models. In this paper, we study rectified flow models, which constrain transport trajectories to be linear from the base distribution to the data distribution. This structural restriction greatly accelerates sampling, often enab...

Hari Krishna Sahoo, Mudit Gaur, Vaneet Aggarwal · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Training Parallel Speculative Draft Models by Directly Minimizing Expected Decoding Rounds

Speculative decoding accelerates large language model inference by using a low-cost draft model to propose tokens that the full-size target model verifies in parallel. Parallel and semi-autoregressive (semi- AR) drafters improve drafting efficiency by proposing an entire block in a single forward pass, but training the...

Yunxiao Zhao, Changxiao Cai · 0 citations
#artificial intelligence Preprint Open access Oct 2026

DSReg: Provably Recovering Individual World Latents without Reconstruction

Methods that recover individual latent variables of the world, from nonlinear ICA to dictionary learning and causal representation learning, anchor the latents to observations through reconstruction, auxiliary supervision, or distributional asymmetries such as non-Gaussianity. Methods without these anchors, including j...

Yujia Zheng, David Klindt, Randall Balestriero et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Efficient Best-of-N policy evaluation for inference-time alignment

Best-of-N (BoN) is a common inference-time alignment method that selects the highest-scoring response among N samples from a reference model. Evaluating BoN policies from logged data is challenging under sample-only access because standard off-policy estimators require density ratios that depend on unavailable response...

Jonas Schweisthal, Yuxin Wang, Athiya Deviyani et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Lower Bounds for Parallel Diffusion Sampling

Standard diffusion samplers generate samples through repeated evaluations of a learned score function. Parallel sampling methods seek to accelerate generation by trading additional evaluations for fewer sequential rounds. This raises the question of how much sequential dependence is unavoidable, even when many score qu...

Yiwen Kou, Yimeng Wang · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Careful Judge: Safe and Efficient Human-AI Collaborative Decision Making

In human-AI collaborative decision making, human review can prevent unsafe AI decisions, but each human judgment is costly. Treating human intervention after AI abstention as a one-off fallback misses the opportunity to improve future AI decisions for greater automation, yet AI adaptively learning from selectively quer...

Chenyu Zhang, Rachel Luo, Boyi Li et al. · 0 citations

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Microsoft Research Blog Oct 6, 2026

What AI gets wrong and what failure teaches us

Jennifer Neville did not want to go into computer science—but that’s exactly where she landed. Neville discusses the starts and stops that led to her professional sweet spot and her work identifying “surprising failures” making it hard for AI to handle complexity.  The post What AI gets wrong and what failure teaches us appeared first on Microsoft Research.

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