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arXiv preprints from January 1, 2026 through September 23, 2026 — 23:45:05 EST

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Posted in astro-ph.CO · 2026-01-12 · John. W. Moffat

Modified Gravity and the Origin of the Excess Radio Galaxy Number-Count Dipole

Recent analyses of wide-area radio-galaxy surveys have reported a statistically significant excess in the cosmic number-count dipole, with an amplitude exceeding the purely kinematic expectation of the standard $Λ$CDM model by a factor of $\sim 3$--$4$, quoted at a significance level of up to $5.4σ$. While residual observational...

💬 0 commentsarXiv:2601.07487v1PDF
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Posted in physics.plasm-ph · 2026-01-12 · Ke-Jian Qian, Zhu-Jun Li, Tao Tao, De-Hua Zhang, Rui Yan, Hang Ding

A radiation two-phase flow model for simulating plasma-liquid interactions

In laser-produced plasma (LPP) extreme ultraviolet (EUV) sources, deformation of a tin droplet into an optimal target shape is governed by its interaction with a pre-pulse laser-generated plasma. This interaction is mediated by a transient ablation pressure, whose complex spatio-temporal evolution remains experimentally inaccessible....

💬 0 commentsarXiv:2601.07486v1PDF
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Posted in astro-ph.GA · 2026-01-12 · Rémi Poitevineau, Emma Tolley, Verlon Etsebeth

A Guided Unconditional Diffusion Model to Synthesize and Inpaint Radio Galaxies from FIRST, MGCLS and Radio Zoo

We present a masked-guided approach for a denoising diffusion probabilistic model (DDPM) trained to generate and inpaint realistic radio galaxy images. The inpainting capability is particularly relevant for reconstructing incomplete observations, improving downstream tasks such as source characterization and morphological...

💬 0 commentsarXiv:2601.07485v2PDF
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Posted in cs.GR · 2026-01-12 · Xiaofeng Jin, Matteo Frosi, Yiran Guo, Matteo Matteucci

R3-RECON: Radiance-Field-Free Active Reconstruction via Renderability

In active reconstruction, an embodied agent must decide where to look next to efficiently acquire views that support high-quality novel-view rendering. Recent work on active view planning for neural rendering largely derives next-best-view (NBV) criteria by backpropagating through radiance fields or estimating information entropy over...

💬 0 commentsarXiv:2601.07484v1PDF
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Posted in cs.CV · 2026-01-12 · Fuyuan Liu, Dianyu Yu, He Ren, Nayu Liu, Xiaomian Kang, Delai Qiu, Fa Zhang, Genpeng Zhen, Shengping Liu, Jiaen Liang, Wei Huang, Yining Wang, Junnan Zhu

FocalOrder: Focal Preference Optimization for Reading Order Detection

Reading order detection is the foundation of document understanding. Most existing methods rely on uniform supervision, implicitly assuming a constant difficulty distribution across layout regions. In this work, we challenge this assumption by revealing a critical flaw: \textbf{Positional Disparity}, a phenomenon where models...

💬 0 commentsarXiv:2601.07483v1PDF
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Posted in cs.DS · 2026-01-12 · Helia Karisani, Mohammadreza Daneshvaramoli, Hedyeh Beyhaghi, Mohammad Hajiesmaili, Cameron Musco

The Secretary Problem with Predictions and a Chosen Order

We study a learning-augmented variant of the secretary problem, recently introduced by Fujii and Yoshida (2023), in which the decision-maker has access to machine-learned predictions of candidate values. The central challenge is to balance consistency and robustness: when predictions are accurate, the algorithm should select a...

💬 0 commentsarXiv:2601.07482v1PDF
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Posted in cs.HC · 2026-01-12 · Philipp Steigerwald, Jens Albrecht

From "Help" to Helpful: A Hierarchical Assessment of LLMs in Mental e-Health Applications

Psychosocial online counselling frequently encounters generic subject lines that impede efficient case prioritisation. This study evaluates eleven large language models generating six-word subject lines for German counselling emails through hierarchical assessment - first categorising outputs, then ranking within categories to enable...

💬 0 commentsarXiv:2602.18443v1PDF
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Posted in eess.AS · 2026-01-12 · Satoshi Hoshika, Takahiro Iwami, Akira Omoto

Directional reflection modeling via wavenumber-domain reflection coefficient for 3D acoustic field simulation

This study proposes a framework for incorporating wavenumber-domain acoustic reflection coefficients into sound field analysis to characterize direction-dependent material reflection and scattering phenomena. The reflection coefficient is defined as the amplitude ratio between incident and reflected waves for each propagation...

💬 0 commentsarXiv:2601.07481v1PDF
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Posted in math.AP · 2026-01-12 · Yi-Long Luo, Jing-Xin Nie

Global renormalized solutions to Boltzmann systems modeling mixture gases of monatomic and polyatomic species

Inspired by DiPerna-Lions' work \cite{Diperna-Lions}, we study the renormalized solutions to the large-data Cauchy problem of the Boltzmann systems modeling mixture gases of monatomic and polyatomic species, in which the distribution functions $f_α$ characterized the polyatomic species contain the continuous internal energy variable...

💬 0 commentsarXiv:2601.07480v1PDF
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Posted in math.NA · 2026-01-12 · Håkon Noren Myhr, Sølve Eidnes

Derivative-free discrete gradient methods

Discrete gradient methods are a class of numerical integrators producing solutions with exact preservation of first integrals of ordinary differential equations. In this paper, we apply order theory combined with the symmetrized Itoh--Abe discrete gradient and finite differences to construct an integral-preserving fourth-order method...

💬 0 commentsarXiv:2601.07479v1PDF
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Posted in cond-mat.mtrl-sci · 2026-01-12 · A. P. Kamantsev, Yu. S. Koshkid`ko, O. E. Kovalev, N. Yu. Nyrkov, A. V. Golovchan, A. A. Amirov, A. M. Aliev

High isothermal magnetocaloric effect in La(Fe,Si)13 based alloys

This work investigates the magnetocaloric effect (MCE) in LaFe_{11.6}Si_{1.4} and LaFe_{11.78}Mn_{0.41}Si_{1.32}H_{1.6} alloys under adiabatic ΔT and isothermal ΔQ conditions in a magnetic field of μ_{0}H = 1.8 T. The studied samples exhibited high reproducibility of the ΔQ-effect upon cyclic magnetic field application, which is of...

💬 0 commentsarXiv:2601.07478v1PDF
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Posted in cs.AI · 2026-01-12 · Zihan Ma, Zhikai Zhao, Chuanbo Hua, Federico Berto, Jinkyoo Park

JudgeFlow: Agentic Workflow Optimization via Block Judge

Optimizing LLM-based agentic workflows is challenging for scaling AI capabilities. Current methods rely on coarse, end-to-end evaluation signals and lack fine-grained signals on where to refine, often resulting in inefficient or low-impact modifications. To address these limitations, we propose JudgeFlow, an...

💬 0 commentsarXiv:2601.07477v2PDF
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Posted in cs.RO · 2026-01-12 · Elia Cereda, Alessandro Giusti, Daniele Palossi

NanoCockpit: Performance-optimized Application Framework for AI-based Autonomous Nanorobotics

Autonomous nano-drones, powered by vision-based tiny machine learning (TinyML) models, are a novel technology gaining momentum thanks to their broad applicability and pushing scientific advancement on resource-limited embedded systems. Their small form factor, i.e., a few tens of grams, severely limits their onboard computational...

💬 0 commentsarXiv:2601.07476v2PDF
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Posted in cs.LG · 2026-01-12 · Farah Ben Slama, Frédéric Armetta

Large Language Models and Algorithm Execution: Application to an Arithmetic Function

Large Language Models (LLMs) have recently developed new advanced functionalities. Their effectiveness relies on statistical learning and generalization capabilities. However, they face limitations in internalizing the data they process and struggle, for instance, to autonomously execute algorithms. In this paper, we investigate the...

💬 0 commentsarXiv:2601.07898v1PDF
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Posted in cs.LG · 2026-01-12 · Haoqian Meng, Yilun Luo, Yafei Zhao, Wenyuan Liu, Peng Zhang, Xindian Ma

ARCQuant: Boosting NVFP4 Quantization with Augmented Residual Channels for LLMs

The emergence of fine-grained numerical formats like NVFP4 presents new opportunities for efficient Large Language Model (LLM) inference. However, it is difficult to adapt existing Post-Training Quantization (PTQ) strategies to these formats: rotation-based methods compromise fine-grained block isolation; smoothing techniques struggle...

💬 0 commentsarXiv:2601.07475v2PDF
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Posted in cs.LG · 2026-01-12 · Youngmin Oh, Hyung-Il Kim, Jung Uk Kim

Task Prototype-Based Knowledge Retrieval for Multi-Task Learning from Partially Annotated Data

Multi-task learning (MTL) is critical in real-world applications such as autonomous driving and robotics, enabling simultaneous handling of diverse tasks. However, obtaining fully annotated data for all tasks is impractical due to labeling costs. Existing methods for partially labeled MTL typically rely on predictions from unlabeled...

💬 0 commentsarXiv:2601.07474v1PDF
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Posted in cs.LG · 2026-01-12 · Michael J. Clark

AntiPaSTO: Self-Supervised Honesty Steering via Anti-Parallel Representations

As models grow more capable, humans cannot reliably verify what they say. Scalable steering requires methods that are internal, self-supervised, and transfer out-of-distribution; existing methods satisfy some but not all three. We introduce AntiPaSTO, which separates representations along an antiparallel axis (+1/-1 produce opposite...

💬 0 commentsarXiv:2601.07473v5PDF
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Posted in cs.IT · 2026-01-12 · Sheng Su, Yuhan Yang, Chao Qi, Xuan He, Bin Dai, Xiaohu Tang

Secure Joint Source-Channel Coding for the AWGN Channel with Feedback: A Finite Blocklength Analysis

In the literature, it has been shown that the secrecy capacity of the additive white Gaussian noise (AWGN) wiretap channel with noise-free feedback equals the capacity of the same model without secrecy constraint, and the classical Schalkwijk-Kailath (SK) scheme achieves the secrecy capacity. In this paper, we show that in finite...

💬 0 commentsarXiv:2601.07472v2PDF
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Posted in astro-ph.EP · 2026-01-12 · Georgios Tsirvoulis, Mikael Granvik, Leonard Schirner, Athanasia Toliou, Jooyeon Geem, Axel Hagermann

Instantaneous thermally-driven erosion can explain dearth of dark near-Sun asteroids

Recent models of the near-Earth asteroid population show that asteroids must be super-catastrophically destroyed when they evolve to orbits with perihelion passages well inside of Mercury's orbit. The heliocentric distances at which the disruptions typically occur are tens of solar radii, which is too far from the Sun for asteroids to...

💬 0 commentsarXiv:2601.07471v1PDF
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Posted in cs.AI · 2026-01-12 · Sirui Liang, Pengfei Cao, Jian Zhao, Wenhao Teng, Xiangwen Liao, Jun Zhao, Kang Liu

Learning How to Remember: A Meta-Cognitive Management Method for Structured and Transferable Agent Memory

Large language model (LLM) agents increasingly rely on accumulated memory to solve long-horizon decision-making tasks. However, most existing approaches store memory in fixed representations and reuse it at a single or implicit level of abstraction, which limits generalization and often leads to negative transfer when distribution...

💬 0 commentsarXiv:2601.07470v1PDF
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Posted in cs.AI · 2026-01-12 · Julien Cumin, Oussama Er-Rahmany, Xi Chen

Knowledge Distillation for LLM-Based Human Activity Recognition in Homes

Human Activity Recognition (HAR) is a central problem for context-aware applications, especially for smart homes and assisted living. A few very recent studies have shown that Large Language Models (LLMs) can be used for HAR at home, reaching high performance and addressing key challenges. In this paper, we provide new experimental...

💬 0 commentsarXiv:2601.07469v1PDF
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Posted in cs.AI · 2026-01-12 · Miao Su, Yucan Guo, Zhongni Hou, Long Bai, Zixuan Li, Yufei Zhang, Guojun Yin, Wei Lin, Xiaolong Jin, Jiafeng Guo, Xueqi Cheng

Beyond Dialogue Time: Temporal Semantic Memory for Personalized LLM Agents

Memory enables Large Language Model (LLM) agents to perceive, store, and use information from past dialogues, which is essential for personalization. However, existing methods fail to properly model the temporal dimension of memory in two aspects: 1) Temporal inaccuracy: memories are organized by dialogue time rather than their actual...

💬 0 commentsarXiv:2601.07468v1PDF
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Posted in math.AC · 2026-01-12 · Marcel Morales, Nguyen Thi Dung

Frobenius Number Of Almost Symmetric Numerical Generalized Almost Arithmetic Semigroups

Let a, k, h, c be positive integers and d a non zero integer. Recall that a numerical generalized almost arithmetic semigroup S is a semigroup minimally generated by relatively prime positive integers a, ha + d, ha + 2d, . . . , ha + kd, c, that is its embedding dimension is k + 2. In a previous work, the authors described the Ap{é}ry...

💬 0 commentsarXiv:2601.07467v1PDF
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Posted in cs.NI · 2026-01-12 · Miguel Rodríguez-Pérez, Sergio Herrería-Alonso, J. Carlos Lopez-Ardao, Andrés Suárez-González

A Scalable Solution for Node Mobility Problems in NDN-Based Massive LEO Constellations

In recent years, there has been increasing investment in the deployment of massive commercial Low Earth Orbit (LEO) constellations to provide global Internet connectivity. These constellations, now equipped with inter-satellite links, can serve as low-latency Internet backbones, requiring LEO satellites to act not only as access nodes...

💬 0 commentsarXiv:2601.07466v1PDF
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Posted in astro-ph.EP · 2026-01-12 · Jakob Robnik, Uroš Seljak, Jon M. Jenkins, Steve Bryson

Exoplanet transit search at the detection limit: detection and false alarm vetting pipeline

One of the primary mission goals of the Kepler space telescope was to detect Earth-like terrestrial planets in the habitable zone around Sun-like stars. These planets are at the detection limit, where the Kepler detection and vetting pipeline produced unreliable planet candidates. We present a novel pipeline that improves the removal...

💬 0 commentsarXiv:2601.07465v2PDF