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arXiv preprints from January 1, 2026 through September 23, 2026 — 19:04:55 EST

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Posted in cs.RO · 2026-01-13 · Shifa Sulaiman, Francesco Schetter, Mehul Menon, Fanny Ficuciello

A Hybrid Model-based and Data-based Approach Developed for a Prosthetic Hand Wrist

The incorporation of advanced control algorithms into prosthetic hands significantly enhances their ability to replicate the intricate motions of a human hand. This work introduces a model-based controller that combines an Artificial Neural Network (ANN) approach with a Sliding Mode Controller (SMC) designed for a tendon-driven soft...

💬 0 commentsarXiv:2601.08711v1PDF
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Posted in cs.LO · 2026-01-13 · Franz Baader, Oliver Fernández Gil

The Unification Type of an Equational Theory May Depend on the Instantiation Preorder: From Results for Single Theories to Results for Classes of Theories

The unification type of an equational theory is defined using a preorder on substitutions, called the instantiation preorder, whose scope is either restricted to the variables occurring in the unification problem, or unrestricted such that all variables are considered. It has been known for more than three decades that the unification...

💬 0 commentsarXiv:2601.08710v1PDF
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Posted in math.NA · 2026-01-13 · Marc Salvadó-Benasco, Aymane Kssim, Alexander Heinlein, Rolf Krause, Serge Gratton, Alena Kopaničáková

Multi-Preconditioned LBFGS for Training Finite-Basis PINNs

A multi-preconditioned LBFGS (MP-LBFGS) algorithm is introduced for training finite-basis physics-informed neural networks (FBPINNs). The algorithm is motivated by the nonlinear additive Schwarz method and exploits the domain-decomposition-inspired additive architecture of FBPINNs, in which local neural networks are defined on...

💬 0 commentsarXiv:2601.08709v2PDF
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Posted in cs.IT · 2026-01-13 · Jesús Gómez-Vilardebò

Multivariate Polynomial Codes for Efficient Matrix Chain Multiplication in Distributed Systems

We study the problem of computing matrix chain multiplications in a distributed computing cluster. In such systems, performance is often limited by the straggler problem, where the slowest worker dominates the overall computation latency. To resolve this issue, several coded computing strategies have been proposed, primarily focusing...

💬 0 commentsarXiv:2601.08708v1PDF
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Posted in stat.ME · 2026-01-13 · Kosuke Morikawa, Jae Kwang Kim

Semiparametric Efficient Data Integration Using the Dual-Frame Sampling Framework

Integrating probability and non-probability samples is increasingly important, yet unknown sampling mechanisms in non-probability sources complicate identification and efficient estimation. We develop semiparametric theory for dual-frame data integration and propose two complementary estimators. The first models the non-probability...

💬 0 commentsarXiv:2601.08707v1PDF
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Posted in cs.SE · 2026-01-13 · Maria Teresa Rossi, Leonardo Mariani, Oliviero Riganelli, Giuseppe Filomeno, Danilo Giannone, Paolo Gavazzo

"Where is My Troubleshooting Procedure?": Studying the Potential of RAG in Assisting Failure Resolution of Large Cyber-Physical System

In today's complex industrial environments, operators must often navigate through extensive technical manuals to identify troubleshooting procedures that may help react to some observed failure symptoms. These manuals, written in natural language, describe many steps in detail. Unfortunately, the number, magnitude, and articulation of...

💬 0 commentsarXiv:2601.08706v2PDF
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Posted in cs.IR · 2026-01-13 · Miaomiao Cai, Zhijie Zhang, Junfeng Fang, Zhiyong Cheng, Xiang Wang, Meng Wang

RMBRec: Robust Multi-Behavior Recommendation towards Target Behaviors

Multi-behavior recommendation faces a critical challenge in practice: auxiliary behaviors (e.g., clicks, carts) are often noisy, weakly correlated, or semantically misaligned with the target behavior (e.g., purchase), which leads to biased preference learning and suboptimal performance. While existing methods attempt to fuse these...

💬 0 commentsarXiv:2601.08705v3PDF
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Posted in cs.RO · 2026-01-13 · Jiaxin Xu, Chao Zhang, Raymond H. Cuijpers, Wijnand A. IJsselsteijn

Designing Persuasive Social Robots for Health Behavior Change: A Systematic Review of Behavior Change Strategies and Evaluation Methods

Social robots are increasingly applied as health behavior change interventions, yet actionable knowledge to guide their design and evaluation remains limited. This systematic review synthesizes (1) the behavior change strategies used in existing HRI studies employing social robots to promote health behavior change, and (2) the...

💬 0 commentsarXiv:2601.15309v1PDF
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Posted in cs.AI · 2026-01-13 · Kaivalya Rawal, Eoin Delaney, Zihao Fu, Sandra Wachter, Chris Russell

Evaluating the Ability of Explanations to Disambiguate Models in a Rashomon Set

Explainable artificial intelligence (XAI) is concerned with producing explanations indicating the inner workings of models. For a Rashomon set of similarly performing models, explanations provide a way of disambiguating the behavior of individual models, helping select models for deployment. However explanations themselves can vary...

💬 0 commentsarXiv:2601.08703v1PDF
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Posted in cond-mat.str-el · 2026-01-13 · Myung-Hwan Whangbo, Reinhard K. Kremer, Hyun-Joo Koo

Reduction of Ordered Spin Moments in Antiferromagnets of S = 5/2 Ions (Fe3+, Mn2+) Driven by Local Magnetic Excitation

For antiferromagnets composed of spin five-half ions, the moments of these ions in the ordered antiferromagnetic state can be significantly smaller than 5 BM (i.e., 1.56 - 4.48 BM) if these ions form quantum fluctuating entities (QFEs), for example, quasi one-dimensional uniform antiferromagnetic chains or quasi zero-spin...

💬 0 commentsarXiv:2601.08702v1PDF
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Posted in q-bio.QM · 2026-01-13 · Tammar Truzman, Matthew A. Lambon Ralph, Ajay D. Halai

Automated Lesion Segmentation of Stroke MRI Using nnU-Net: A Comprehensive External Validation Across Acute and Chronic Lesions

Accurate and generalisable segmentation of stroke lesions from magnetic resonance imaging (MRI) is essential for advancing clinical research, prognostic modelling, and personalised interventions. Although deep learning has improved automated lesion delineation, many existing models are optimised for narrow imaging contexts and...

💬 0 commentsarXiv:2601.08701v1PDF
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Posted in math.OC · 2026-01-13 · Nam Van Tran

Novel Dynamical Systems with Finite-Time and Predefined-Time Stability for Generalized Inverse Mixed Variational Inequality Problems

This paper investigates a class of generalized inverse mixed variational inequality problems (GIMVIPs), which consist in finding a vector $\overline{w}\in \R^d$ such that \[ F(\bar w)\in Ω\quad \text{and} \quad \langle h(\bar w), v-F(\bar w) \rangle + g(v)-g(F(\bar w)) \ge 0, \quad \forall v\in Ω, \] where \(h,F:\R^d\to\R^d\) are...

💬 0 commentsarXiv:2601.08700v2PDF
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Posted in cs.CL · 2026-01-13 · Zhengwei Tao, Bo Li, Jialong Wu, Guochen Yan, Huanyao Zhang, Jiahao Xu, Haitao Mi, Wentao Zhang

RAGShaper: Eliciting Sophisticated Agentic RAG Skills via Automated Data Synthesis

Agentic Retrieval-Augmented Generation (RAG) empowers large language models to autonomously plan and retrieve information for complex problem-solving. However, the development of robust agents is hindered by the scarcity of high-quality training data that reflects the noise and complexity of real-world retrieval environments....

💬 0 commentsarXiv:2601.08699v1PDF
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Posted in cs.CR · 2026-01-13 · Lorenzo Casalino, Maria Méndez Real, Jean-Christophe Prévotet, Rubén Salvador

Double Strike: Breaking Approximation-Based Side-Channel Countermeasures for DNNs

Deep neural networks (DNNs), which support services such as driving assistants and medical diagnoses, undergo lengthy and expensive training procedures. Therefore, the training's outcome - the DNN weights - represents a significant intellectual property asset to protect. Side-channel analysis (SCA) has recently appeared as an...

💬 0 commentsarXiv:2601.08698v1PDF
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Posted in cs.HC · 2026-01-13 · Nifu Dan

Auditing Student-AI Collaboration: A Case Study of Online Graduate CS Students

As generative AI becomes embedded in higher education, it increasingly shapes how students complete academic tasks. While these systems offer efficiency and support, concerns persist regarding over-automation, diminished student agency, and the potential for unreliable or hallucinated outputs. This study conducts a mixed-methods audit...

💬 0 commentsarXiv:2601.08697v4PDF
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Posted in cs.LG · 2026-01-13 · Kangyu Zheng, Kai Zhang, Jiale Tan, Xuehan Chen, Yingzhou Lu, Zaixi Zhang, Lichao Sun, Marinka Zitnik, Tianfan Fu, Zhiding Liang

Beyond Affinity: A Benchmark of 1D, 2D, and 3D Methods Reveals Critical Trade-offs in Structure-Based Drug Design

Currently, the field of structure-based drug design is dominated by three main types of algorithms: search-based algorithms, deep generative models, and reinforcement learning. While existing works have typically focused on comparing models within a single algorithmic category, cross-algorithm comparisons remain scarce. In this paper,...

💬 0 commentsarXiv:2601.14283v1PDF
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Posted in cs.NE · 2026-01-13 · Andoni Irazusta Garmendia, Josu Ceberio, Alexander Mendiburu

Enabling Population-Based Architectures for Neural Combinatorial Optimization

Neural Combinatorial Optimization (NCO) has mostly focused on learning policies, typically neural networks, that operate on a single candidate solution at a time, either by constructing one from scratch or iteratively improving it. In contrast, decades of work in metaheuristics have shown that maintaining and evolving populations of...

💬 0 commentsarXiv:2601.08696v1PDF
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Posted in physics.optics · 2026-01-13 · Natalia Salakhova, Andrey Demenev, Oleg Klimenko, Vladimir Kulakovskii, Vladimir Antonov, Nikolay Gippius, Sergey Dyakov

Broadband wide-view all-dielectric handedness-preserving mirror

We report the theoretical design and experimental realization of a wideband, all-dielectric mirror that preserves the handedness of incident light upon reflection in the near-infrared range. The mirror consists of a high-contrast, near-subwavelength, one-dimensional dielectric grating on a Bragg mirror. We optimized this structure...

💬 0 commentsarXiv:2601.08695v1PDF
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Posted in nucl-ex · 2026-01-13 · Ryoko Kino, Sho Nagao, Patrick Achenbach, Satoshi N. Nakamura, Josef Pochodzalla, Takeru Akiyama, Ralph Böhm, Mirco Christmann, Michael O. Distler, Luca Doria, Anselm Esser, Julian Geratz, Christian Helmel, Matthias Hoek, Tatsuhiro Ishige, Masashi Kaneta, Pascal Klag, David Markus, Harald Merkel, Masaya Mizuno, Ulrich Müller, Kotaro Nishi, Ken Nishida, Kazuki Okuyama, Jonas Pätschke, Björn Sören Schlimme, Concettina Sfienti, Tianhao Shao, Daniel Steger, Marcell Steinen, Liguang Tang, Michaela Thiel, Philipp Vonwirth, Luca Wilhelm

Precise measurement of the $Λ$-binding energy difference between $^3_Λ$H and $^4_Λ$H via decay-pion spectroscopy at MAMI

We performed high-precision decay-pion spectroscopy of light $Λ$ hypernuclei at the Mainz Microtron (MAMI) using the A1 spectrometer facility. By measuring the monochromatic $π^-$ momentum from the two-body weak decay $^3_Λ\mathrm{H} \to {}^3\mathrm{He} + π^-$ and referencing it to the $^4_Λ\mathrm{H} \to {}^4\mathrm{He} + π^-$ decay,...

💬 0 commentsarXiv:2601.08694v2PDF
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Posted in cs.CL · 2026-01-13 · Keito Inoshita

Nationality and Region Prediction from Names: A Comparative Study of Neural Models and Large Language Models

Predicting nationality from personal names has practical value in marketing, demographic research, and genealogical studies. Conventional neural models learn statistical correspondences between names and nationalities from task-specific training data, posing challenges in generalizing to low-frequency nationalities and distinguishing...

💬 0 commentsarXiv:2601.08692v2PDF
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Posted in astro-ph.GA · 2026-01-13 · Yash Lapasia, Sandro Tacchella, Francesco D'Eugenio, Dávid Puskás, Andrew J. Bunker, A. Lola Danhaive, Benjamin D. Johnson, Roberto Maiolino, Brant Robertson, Charlotte Simmonds, Irene Shivaei, Christina C. Williams, Christopher Willmer, Mengyuan Xiao

Stellar masses of optically dark galaxies: uncertainty introduced by the attenuation law and star-formation histories

JWST observations have suggested that some high-redshift galaxies may be ultra-massive, thereby challenging standard models of early galaxy formation and cosmology. We analyse the stellar masses using different modelling assumptions and with new data of three galaxies (S1, S2 and S3), whose NIRCam/grism redshifts were consistent with...

💬 0 commentsarXiv:2601.08693v2PDF
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Posted in cs.SE · 2026-01-13 · Shaznin Sultana, Sadia Afreen, Nasir U. Eisty

LLMs in Code Vulnerability Analysis: A Proof of Concept

Context: Traditional software security analysis methods struggle to keep pace with the scale and complexity of modern codebases, requiring intelligent automation to detect, assess, and remediate vulnerabilities more efficiently and accurately. Objective: This paper explores the incorporation of code-specific and general-purpose Large...

💬 0 commentsarXiv:2601.08691v1PDF
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Posted in cs.AI · 2026-01-13 · Shubham Kulkarni, Alexander Lyzhov, Shiva Chaitanya, Preetam Joshi

All Required, In Order: Phase-Level Evaluation for AI-Human Dialogue in Healthcare and Beyond

Conversational AI is starting to support real clinical work, but most evaluation methods miss how compliance depends on the full course of a conversation. We introduce Obligatory-Information Phase Structured Compliance Evaluation (OIP-SCE), an evaluation method that checks whether every required clinical obligation is met, in the...

💬 0 commentsarXiv:2601.08690v1PDF
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Posted in cs.CL · 2026-01-13 · Zhaolu Kang, Junhao Gong, Wenqing Hu, Shuo Yin, Kehan Jiang, Zhicheng Fang, Yingjie He, Chunlei Meng, Rong Fu, Dongyang Chen, Leqi Zheng, Eric Hanchen Jiang, Yunfei Feng, Yitong Leng, Junfan Zhu, Xiaoyou Chen, Xi Yang, Richeng Xuan

QuantEval: A Benchmark for Financial Quantitative Tasks in Large Language Models

Large Language Models (LLMs) have shown strong capabilities across many domains, yet their evaluation in financial quantitative tasks remains fragmented and mostly limited to knowledge-centric question answering. We introduce QuantEval, a benchmark that evaluates LLMs across three essential dimensions of quantitative finance:...

💬 0 commentsarXiv:2601.08689v2PDF