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Adapting Projection-Based Reduced-Order Models using Projected Gaussian Process

arXiv:2410.14090v2 Announce Type: replace Abstract: Projection-based model reduction is among the most widely adopted methods for constructing parametric Reduced-Order Models (ROM). Utilizing the snapshot data from solving full-order governing equations, the Proper Orthogonal Decomposition (POD) computes the optimal basis modes…

Kernel Embeddings and the Separation of Measure Phenomenon

arXiv:2505.04613v2 Announce Type: replace Abstract: We prove that kernel covariance embeddings lead to information-theoretically perfect separation of distinct probability distributions. In statistical terms, we establish that testing for the equality of two probability measures on a compact and separable metric…

Gradient Methods with Online Scaling Part II. Practical Aspects

arXiv:2509.11007v1 Announce Type: cross Abstract: Part I of this work [Gao25] establishes online scaled gradient methods (OSGM), a framework that utilizes online convex optimization to adapt stepsizes in gradient methods. This paper focuses on the practical aspects of OSGM. We…

Scalable extensions to given-data Sobol’ index estimators

arXiv:2509.09078v2 Announce Type: replace Abstract: Given-data methods for variance-based sensitivity analysis have significantly advanced the feasibility of Sobol’ index computation for computationally expensive models and models with many inputs. However, the limitations of existing methods still preclude their application to…

A Permutation-free Kernel Two-Sample Test

arXiv:2211.14908v3 Announce Type: replace-cross Abstract: The kernel Maximum Mean Discrepancy~(MMD) is a popular multivariate distance metric between distributions that has found utility in two-sample testing. The usual kernel-MMD test statistic is a degenerate U-statistic under the null, and thus it…

SelectMix: Enhancing Label Noise Robustness through Targeted Sample Mixing

arXiv:2509.11265v1 Announce Type: cross Abstract: Deep neural networks tend to memorize noisy labels, severely degrading their generalization performance. Although Mixup has demonstrated effectiveness in improving generalization and robustness, existing Mixup-based methods typically perform indiscriminate mixing without principled guidance on sample…