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arXiv preprints from January 1, 2026 through September 7, 2026 — 04:47:42 EST

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Posted in stat.ME · 2026-08-31 · Juhee Lee, Kun Xia, Jianrui Zhang, Gongjun Xu, Qing Lu, Chenxi Li

Genetic association testing with multivariate survival phenotypes under interval censoring

Set-based genetic association tests provide a powerful framework for detecting genetic effects on complex traits by jointly analyzing multiple genetic variants. Although set-based methods have been developed for interval-censored survival outcomes, existing approaches primarily focus on a single survival phenotype and therefore do not...

💬 0 commentsarXiv:2609.00456v1PDF
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Posted in stat.CO · 2026-08-31 · Sam Power

Non-Uniform Random Scans in Gibbs Sampling and CAVI

Gibbs sampling and coordinate ascent variational inference (CAVI) are two basic coordinate-wise methods for statistical computation. Recent analyses under strong log-concavity establish convergence rates for versions of these algorithms that update one uniformly selected block at each step. We extend both results to arbitrary fixed,...

💬 0 commentsarXiv:2609.00408v1PDF
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Posted in stat.ML · 2026-08-31 · Caixia Xu, Piotr Fryzlewicz

A convolutional framework for detecting event-driven dynamics in energy price series

This paper develops a general convolutional neural network (CNN) framework for detecting heterogeneous event-driven dynamics in univariate time series windows. We show that the induced CNN class exactly represents classifiers based on range, maximum drawup, maximum drawdown and slope change, and uniformly approximates realised...

💬 0 commentsarXiv:2609.00402v1PDF
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Posted in stat.ME · 2026-08-31 · Khai Nguyen, Elizabeth Juarez-Colunga, Peter Mueller

Generalized Bayesian Clustering with Regression for Unaligned Longitudinal Binary Data

We propose a generalized Bayesian clustering with regression model for unaligned longitudinal binary outcomes, motivated by seizure diary data from the Human Epilepsy Project. Seizure diaries are sparse, irregularly observed, and vary enormously across patients. A single fully-specified generative model tends to be either misspecified...

💬 0 commentsarXiv:2609.00307v1PDF
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Posted in stat.ME · 2026-08-31 · Jack Storror Carter

Parameterising Gaussian Graphical Models

Gaussian graphical models (GGMs) describe the dependence structure among jointly Gaussian random variables. However, the most common parameterisation of GGMs, the precision matrix, describes both the dependence and scale of the variables. This has been shown to lead to model selection methods that depend on the scale of the variables,...

💬 0 commentsarXiv:2609.00288v1PDF
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Posted in stat.ML · 2026-08-31 · Mitch Hill

Exact Global MCMC with Denoising Diffusion

This work shows that diffusion models learned with standard denoising loss can provide effective global MCMC proposals for complex high-dimensional target densities. The method is motivated by the observation that sequentially applying a forward and reverse diffusion process defines a Markov chain with a target stationary distribution...

💬 0 commentsarXiv:2609.00279v1PDF
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Posted in stat.ML · 2026-08-31 · Zihang Liang, Haochen Zhang, Lingzhou Xue

Provably Efficient Federated Reinforcement Learning with Linear Function Approximation and Logarithmic Communication Cost

We study federated online reinforcement learning with linear function approximation. While recent multi-agent reinforcement learning algorithms achieve strong regret guarantees, they typically require sharing raw trajectories. This reliance incurs a communication cost that scales linearly with the number of episodes and violates the...

💬 0 commentsarXiv:2609.00193v1PDF
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Posted in astro-ph.IM · 2026-08-31 · Elli Jobst, Lea Heckmann, Lukas Heinrich, David Paneque

The Analysis, not the Aperture: End-to-End Transformer Reconstruction for Imaging Atmospheric Cherenkov Telescopes

Imaging Atmospheric Cherenkov Telescopes (IACTs) detect very-high-energy gamma rays by imaging the nanosecond Cherenkov flash of the air shower they initiate in the Earth's atmosphere. For four decades the first steps of IACT event reconstruction have been essentially unchanged, relying on a heavy parameterisation and dimensionality...

💬 0 commentsarXiv:2608.31148v1PDF
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Posted in physics.optics · 2026-08-31 · Jiejun Zhang, Jianping Yao

Integrated Microwave Photonics: From Material Platforms to Systems-on-Chip

In this paper, recent advances in integrated microwave photonics (IMWP) are reviewed, including material platforms, integration technologies, and system functionalities. Emerging opportunities and future perspectives are discussed. Silicon (Si) and silicon nitride (SiN) provide dense routing, programmable filtering, and low-loss...

💬 0 commentsarXiv:2608.31146v1PDF
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Posted in astro-ph.GA · 2026-08-31 · Jennifer K. S. Friske, Filippo Fraternali, Gabriele Pezzulli

The impact of hot mode accretion and angular momentum conservation on metallicity gradients of galactic discs

The hot circumgalactic medium (CGM) of a galaxy inevitably rotates more slowly than the cold gas in the disc it surrounds, due to a higher pressure support against gravity. If it accretes vertically onto the disc, angular momentum conservation leads to radial flows, advection of metals inwards and the steepening of a metallicity...

💬 0 commentsarXiv:2608.31144v1PDF
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Posted in physics.flu-dyn · 2026-08-31 · Debashis Panda, Nicolas Périnet, Abdullah M. Abdal, Lyes Kahouadji, Seungwon Shin, Jalel Chergui, Damir Juric, Omar K. Matar, Laurette S. Tuckerman

Numerical simulation of a two-frequency-driven superlattice Faraday-wave pattern

The formation of a superlattice pattern in two-frequency-driven Faraday waves discovered and named SSS-I by Arbell & Fineberg (1998, 2002) is investigated by means of Direct Numerical Simulations (DNS) of the full three-dimensional Navier--Stokes equations with a free surface. Two simulations with distinct quasi-hexagonal initial...

💬 0 commentsarXiv:2608.31141v1PDF
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Posted in astro-ph.CO · 2026-08-31 · Y. Omori, W. L. K. Wu, Y. Nakato, F. Bianchini, L. Balkenhol, C. Daley, W. Quan, E. Anderes, A. J. Anderson, B. Ansarinejad, M. Archipley, D. R. Barron, P. S. Barry, K. Benabed, A. N. Bender, B. A. Benson, L. E. Bleem, S. Bocquet, F. R. Bouchet, E. Camphuis, M. G. Campitiello, J. E. Carlstrom, J. Carron, C. L. Chang, P. M. Chichura, A. Chokshi, T. -L. Chou, A. Coerver, T. M. Crawford, T. de Haan, K. R. Dibert, M. A. Dobbs, M. Doohan, D. Dutcher, C. Feng, K. R. Ferguson, N. C. Ferree, K. Fichman, A. Foster, S. Galli, A. E. Gambrel, A. K. Gao, F. Ge, F. Guidi, S. Guns, N. W. Halverson, E. Hivon, G. P. Holder, W. L. Holzapfel, J. C. Hood, A. Hryciuk, N. Huang, T. Jhaveri, F. Kéruzoré, A. R. Khalife, L. Knox, K. Kornoelje, C. -L. Kuo, K. Levy, Y. Li, A. E. Lowitz, C. Lu, G. P. Lynch, T. J. Maccarone, A. S. Maniyar, E. S. Martsen, F. Menanteau, M. Millea, J. Montgomery, T. Natoli, A. Ouellette, Z. Pan, P. Paschos, K. A. Phadke, A. W. Pollak, K. Prabhu, M. Rahimi, A. Rahlin, C. L. Reichardt, M. Rouble, J. E. Ruhl, A. C. Silva Oliveira, A. Simpson, J. A. Sobrin, A. A. Stark, J. Stephen, C. Tandoi, C. Trendafilova, J. D. Vieira, A. G. Vieregg, A. Vitrier, Y. Wan, N. Whitehorn, M. R. Young, J. A. Zebrowski

SPT-3G D1: Quadratic-Estimator CMB Lensing Reconstruction and Cosmology

We present a map of the cosmic microwave background (CMB) lensing potential reconstructed from observations taken during the 2019 and 2020 seasons with the third-generation camera on the South Pole Telescope (SPT), covering the $1500\,{\rm deg}^{2}$ SPT-3G Main field, referred to as the SPT-3G D1 dataset. From the multi-frequency...

💬 0 commentsarXiv:2608.31136v1PDF
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Posted in physics.ins-det · 2026-08-31 · Lucas Finazzi, Felipe Soriano, Leandro Gagliardi, Federico Golmar

FPGA-based TDC for SiPM Timing and Amplitude Measurements

Silicon photomultipliers (SiPMs) are widely used in photon-counting applications, such as positron emission tomography or particle physics, where precise timestamps and photoelectron number information are both required. In this work, a Time-to-Digital Converter with amplitude measurement capabilities was designed using an Artix-7...

💬 0 commentsarXiv:2608.31135v1PDF
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Posted in cond-mat.supr-con · 2026-08-31 · Anoop Dhillon, Amir Borji, Hamed Majedi

Microwave-Induced Optomagnetism in High-Temperature Superconductors

We report the first experimental observation of a steady-state, microwave-driven inverse Faraday effect in a high-temperature superconductor. Circularly polarized microwave radiation generates a helicity-dependent response in an epitaxial $\mathrm{YBa_2Cu_3O_{7-δ}}$ film, detected using homodyne Hall transport. The optomagnetic...

💬 0 commentsarXiv:2608.31127v1PDF
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Posted in hep-ph · 2026-08-31 · Sidney S. Avancini, Maximo Coppola, Dyana C. Duarte, Ricardo L. S. Farias, Norberto N. Scoccola, William R. Tavares

From Threshold Crossing to Wave-function Renormalization: Defining the Pion Mott Temperature in a Magnetic Field

We investigate the dissociation of the neutral pion in hot magnetized quark matter within the two-flavor Nambu--Jona-Lasinio model. At zero magnetic field, the Mott temperature is conventionally determined by $m_{π^0}(T_{\rm Mott})=2M(T_{\rm Mott})$, above which a real pole ceases to exist. At finite magnetic field, Landau...

💬 0 commentsarXiv:2608.31125v1PDF
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Posted in physics.ins-det · 2026-08-31 · S. A. Panamaldeniya, K. M. Dong, D. M. Mei

Development and characterization of a wingless ICPC HPGe detector with thin amorphous-Ge contacts

High-purity germanium (HPGe) detectors with thin amorphous-germanium (a-Ge) contacts can provide bipolar charge blocking and surface passivation while minimizing contact-related inactive thickness. We report the fabrication and characterization of a p-type inverted coaxial point-contact (ICPC) HPGe detector using thin a-Ge contacts in...

💬 0 commentsarXiv:2608.31123v1PDF
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Posted in cond-mat.stat-mech · 2026-08-31 · Gabriele Bandini, Giulio Biroli, Patrick Charbonneau, Andrea Gambassi

Overcoming critical slowing down in frustrated spin systems by learned multiscale sampling

Cluster algorithms, such as the Swendsen--Wang and Wolff methods, are among the most successful MCMC methods for mitigating critical slowing down in statistical systems. These constructive cluster algorithms, however, fail in the presence of even extremely weak frustration. Here, we sidestep this fundamental limitation by learning...

💬 0 commentsarXiv:2608.31114v1PDF
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Posted in stat.AP · 2026-08-31 · Ben O'Brien, Lewis J. Lehe

A Tool for Reconstructing Transit Vehicle Trajectories: A Case Study at IndyGo

Automatic vehicle location (AVL) data produced by transit vehicles is invaluable in performance studies, but turning raw AVL points into a detailed view of vehicle stop-and-gos is burdensome: the datasets are sparse, noisy, and prone to blunders. While recent research has explored methods of reconstructing trajectories describing the...

💬 0 commentsarXiv:2608.31078v1PDF
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Posted in stat.ME · 2026-08-31 · Anton van Beek, Adam. M Boyce, Will J. Dawson, James B. Robinson

Posterior Geometry and Identifiability in Multi-Response Bayesian Calibration

Calibration under model misspecification is inherently ill-posed because calibration parameters and structural discrepancy are statistically confounded without additional assumptions. Bayesian formulations address this ambiguity through prior and covariance modeling choices, including multi-response observations and cross-source...

💬 0 commentsarXiv:2608.31047v1PDF
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Posted in stat.ML · 2026-08-31 · James Crowley, Faez Ahmed, Anton van Beek

Learning the Geometry of Admissible Hypotheses through Inductive Bias in Training Distributions

Scientific discovery often requires reasoning over competing hypotheses that are consistent with experimental observations. For mixed-variable and combinatorial hypothesis spaces, however, constructing probabilistic representations remains challenging because both the active model components and their associated parameters are...

💬 0 commentsarXiv:2608.31028v1PDF
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Posted in cs.LG · 2026-08-31 · Yang Xu, Chenang Li, Jiefu Zhang, Haixiang Sun, Zhou Li, Vaneet Aggarwal

Selection-Aware Stress Testing for Interactive Agents

Agent evaluations often use one benchmark to choose a workflow and then search for task types where its advantage weakens, so both conclusions are selected from the same data. We introduce Selection-Aware Semantic Stress Testing (\SASST{}), which learns a task reweighting from pre-execution features on discovery tasks and evaluates...

💬 0 commentsarXiv:2608.30916v1PDF
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Posted in astro-ph.SR · 2026-08-31 · Enzo Brasil, Cira E. G. Otiniano, Carolyne Brito, Beatriz Albernaz, Fidel Morales

Extremes of solar spectral irradiance in the SORCE/XPS record

Extreme and rare changes in space mission solar irradiance records are scientifically relevant but difficult to quantify because these records are finite, instrument dependent, and affected by observational gaps and time varying measurement quality. We evaluated extreme daily logarithmic changes in the band integrated 0.1-7.0 nm...

💬 0 commentsarXiv:2608.30878v1PDF
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Posted in stat.CO · 2026-08-31 · Rahul Singh, Abhinek Shukla

Scalable Statistical Inference in Stochastic Gradient Descent

Constructing confidence regions for stochastic gradient descent (SGD) ideally requires estimating the asymptotic covariance matrix, a severe computational bottleneck in high dimensions. Traditional cancellation-based batch means methods bypass this estimation but require inverting a sample batch covariance matrix. This introduces...

💬 0 commentsarXiv:2608.30845v1PDF
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Posted in stat.ME · 2026-08-31 · José María Lago, Albert Castellana, Edgars Nemše

Aggregate Disambiguation Systems

Natural-language tasks can elicit different verdicts from protocol-following evaluators that receive the same declared information. We study aggregate disambiguation systems (ADSs). Given a task and a candidate solution, each evaluator casts a binary vote on whether the solution should be accepted, and the system aggregates the votes...

💬 0 commentsarXiv:2608.30805v1PDF
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Posted in stat.ME · 2026-08-31 · Yongqi Zhong, Anne-Renee Hartman, Jing Zhang

From Test Performance to Risk-Based Effect Sizes: A Unified Wald-Type Framework to Design Clinical Validation Studies for Binary and Survival Outcomes

Clinical validation studies of predictive tests are usually designed to focus on sensitivity ($Se$) and specificity ($Sp$), while statistical power is often calculated on regression-effect scales (e.g., risk ratio, hazard ratio). However, these quantities are statistically connected. Here, we provide closed-form links from...

💬 0 commentsarXiv:2608.30801v1PDF