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data science

3,686 papers

Design of Experiment for Discovering Directed Mixed Graph

We study the design of interventions for causal discovery in simple structural causal models whose causal graphs are directed mixed graphs (DMGs) that may contain directed cycles and bidirected edges representing latent confounding. In such case, observational conditional-independence (CI) information may not identify...

Hai-Jie Xu, Chen Zhang · 0 citations
#machine learning Preprint Jul 2025

Adaptively Truncated Signature-based Logistic Regression for Semi-parametric Functional Classification

This work proposes Adaptively Truncated Signature-based Logistic Regression (ATSLR), a semi-parametric classification framework that integrates path-signature representations with a data-driven procedure for selecting the signature truncation order via penalized empirical risk minimization and highlights the practical...

Peng-Cheng Zeng, Siyuan Jiang · 2 citations
#machine learning Preprint Open access Sep 2026

Identifiable Convex-Concave Regression via Sub-gradient Regularised Least Squares

We propose a novel nonparametric regression method that models complex input-output relationships as the sum of convex and concave components. The method-Identifiable Convex-Concave Nonparametric Least Squares (ICCNLS)-decomposes the target function into additive shape-constrained components, each represented via sub-g...

William Chung · 0 citations

When do Random Forests work?

This work revisits decorrelation and regularization by presenting a systematic analysis of out-of-sample mean-squared error (MSE) for different SNR scenarios and finds that, for both bagging and random forests, bias can be significantly reduced in the presence of correlated covariates.

Christos Revelas, O. Boldea, B. Werker · 2 citations
#machine learning Open access Apr 2025

FEAT: Free energy Estimators with Adaptive Transport

A novel framework for free energy estimation that leverages learned transports implemented via stochastic interpolants and provides consistent, minimum-variance estimators based on escorted Jarzynski equality and controlled Crooks theorem, alongside variational upper and lower bounds on free energy differences.

Jiajun He, Yuan-Qi Du, Francisco Vargas et al. · 23 citations · ⚡1

Towards Weaker Variance Assumptions for Stochastic Optimization

A classical assumption for analyzing stochastic gradient algorithms where the squared norm of the stochastic subgradient is allowed to grow as fast as the squared norm of the optimization variable is revisited.

Ahmet Alacaoglu, Yura Malitsky, Stephen J. Wright · 21 citations · ⚡3
#machine learning Preprint Open access Sep 2026

Generalization Analysis of Online Stochastic Gradient Descent for Overparameterized Two-Layer Neural Networks

We investigate the generalization performance of online stochastic gradient descent (SGD) for overparameterized two-layer neural networks under the Neural Tangent Kernel (NTK) regime. Leveraging the NTK approximation together with the convergence theory of stochastic approximation in reproducing kernel Hilbert spaces (...

Dinghao Cao, Zheng-Chu Guo, Lei Shi · 0 citations
#machine learning Conference Feb 2024

Revisiting Inexact Fixed-Point Iterations for Min-Max Problems: Stochasticity and Structured Nonconvexity

This work provides a refined analysis for inexact Halpern iteration that relaxes the required inexactness level to improve some state-of-the-art complexity results even for constrained stochastic convex-concave min-max problems.

Ahmet Alacaoglu, Donghwan Kim, Stephen J. Wright · 12 citations · ⚡2
#machine learning Preprint Aug 2026

Memory--Batch Tradeoffs in Lipschitz Bandits

The analysis separates fine-scale comparisons from the regional information needed to allocate their samples at low regret, which separates fine-scale comparisons from the regional information needed to allocate their samples at low regret.

Zicheng Lyu, Zengfeng Huang · 0 citations
#machine learning Preprint Jun 2026

Hyperbolic Manifold Constrained Tabular Neural Network

Experimental results show that the proposed hyperbolic manifold constrained tabular neural network is effective, and HTNN ranks first among 36 methods on 200 classification datasets and third among 34 methods on 100 regression datasets.

Tian Li, Huizhi Liang, Lucy Robinson et al. · 0 citations

Filtered Conformal Ellipsoids for Graph-Native Time Series

This work analyses contraction in an observable predictive-law quotient that identifies hidden states producing the same future sequence of emitted Gaussian laws producing the same future sequence of emitted Gaussian laws.

Yannick Limmer · 0 citations

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GPT-Lab Nov 3, 2026

Sovereignty Is the Option to Leave

Is your company’s AI sovereign? A practical guide for CIOs on AI vendor lock-in, EU Data Act switching, cloud sovereignty, and testing your exit plan before you need it. The post Sovereignty Is the Option to Leave appeared first on GPT-Lab.

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