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Computer Science

arXiv preprints from January 1, 2026 through September 8, 2026 — 12:26:36 EST

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Posted in cs.CL · 2026-01-20 · Adrian Cosma, Oleg Szehr, David Kletz, Alessandro Antonucci, Olivier Pelletier

Automatic Prompt Optimization for Dataset-Level Feature Discovery

Feature extraction from unstructured text is a critical step in many downstream classification pipelines, yet current approaches largely rely on hand-crafted prompts or fixed feature schemas. We formulate feature discovery as a dataset-level prompt optimization problem: given a labelled text corpus, the goal is to induce a global set...

💬 0 commentsarXiv:2601.13922v1PDF
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Posted in cs.GT · 2026-01-20 · Spyridon C. Giagtzoglou, Mark H. M. Winands, Barbara Franci

Asymmetric regularization mechanism for GAN training with Variational Inequalities

We formulate the training of generative adversarial networks (GANs) as a Nash equilibrium seeking problem. To stabilize the training process and find a Nash equilibrium, we propose an asymmetric regularization mechanism based on the classic Tikhonov step and on a novel zero-centered gradient penalty. Under smoothness and a local...

💬 0 commentsarXiv:2601.13920v1PDF
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Posted in cs.CL · 2026-01-20 · Yuezhe Yang, Hao Wang, Yige Peng, Jinman Kim, Lei Bi

HyperWalker: Dynamic Hypergraph-Based Deep Diagnosis for Multi-Hop Clinical Modeling across EHR and X-Ray in Medical VLMs

Automated clinical diagnosis remains a core challenge in medical AI, which usually requires models to integrate multi-modal data and reason across complex, case-specific contexts. Although recent methods have advanced medical report generation (MRG) and visual question answering (VQA) with medical vision-language models (VLMs), these...

💬 0 commentsarXiv:2601.13919v1PDF
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Posted in cs.CL · 2026-01-20 · Yusheng Liao, Chuan Xuan, Yutong Cai, Lina Yang, Zhe Chen, Yanfeng Wang, Yu Wang

AgentEHR: Advancing Autonomous Clinical Decision-Making via Retrospective Summarization

Large Language Models have demonstrated profound utility in the medical domain. However, their application to autonomous Electronic Health Records~(EHRs) navigation remains constrained by a reliance on curated inputs and simplified retrieval tasks. To bridge the gap between idealized experimental settings and realistic clinical...

💬 0 commentsarXiv:2601.13918v1PDF
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Posted in cs.CV · 2026-01-20 · Pavlo Melnyk, Cuong Le, Urs Waldmann, Per-Erik Forssén, Bastian Wandt

On the Role of Rotation Equivariance in Monocular 2D-to-3D Human Pose Lifting

Estimating 3D from 2D is one of the central tasks in computer vision. In this work, we consider the monocular setting, i.e. single-view input, for 3D human pose estimation (HPE), where the goal is to predict a 3D point set of human skeletal joints from a single 2D image, typically via 2D keypoint detection followed by 2D-to-3D...

💬 0 commentsarXiv:2601.13913v2PDF
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Posted in cs.CR · 2026-01-20 · Cosmin-Iulian Irimia

Decentralized Infrastructure for Digital Notarizing, Signing and Sharing Files using Blockchain

Traditional paper-based document management has long posed challenges related to security, authenticity, and efficiency. Despite advances in digitalization, official documents remain vulnerable to forgery, loss, and unauthorized access. This thesis proposes a decentralized infrastructure for digital notarization, signing, and sharing...

💬 0 commentsarXiv:2601.13907v1PDF
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Posted in cs.LG · 2026-01-20 · Hao Deng, Zhang Guo, Shuiping Gou, Bo Liu

SPGCL: Simple yet Powerful Graph Contrastive Learning via SVD-Guided Structural Perturbation

Graph Neural Networks (GNNs) are sensitive to structural noise from adversarial attacks or imperfections. Existing graph contrastive learning (GCL) methods typically rely on either random perturbations (e.g., edge dropping) for diversity or spectral augmentations (e.g., SVD) to preserve structural priors. However, random perturbations...

💬 0 commentsarXiv:2602.00064v2PDF
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Posted in cs.SE · 2026-01-20 · Xingcheng Chen, Oliver Weissl, Andrea Stocco

Feature-Aware Test Generation for Deep Learning Models

As deep learning models are widely used in software systems, test generation plays a crucial role in assessing the quality of such models before deployment. To date, the most advanced test generators rely on generative AI to synthesize inputs; however, these approaches remain limited in providing semantic insight into the causes of...

💬 0 commentsarXiv:2601.14081v1PDF
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Posted in cs.CV · 2026-01-20 · Paul Walker, James A. D. Gardner, Andreea Ardelean, William A. P. Smith, Bernhard Egger

VENI: Variational Encoder for Natural Illumination

Inverse rendering is an ill-posed problem, but priors such as illumination priors can help simplify it. Existing work either disregards the spherical and rotation-equivariant nature of illumination environments or does not provide a well-behaved latent space. We propose a rotation-equivariant variational autoencoder that models...

💬 0 commentsarXiv:2601.14079v2PDF
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Posted in cs.FL · 2026-01-20 · Mathieu Lehaut, Anca Muscholl, Nir Piterman

From Trees to Tree-Like: Distribution and Synthesis for Asynchronous Automata

We revisit constructions for distribution and synthesis of Zielonka's asynchronous automata in restricted settings. We show first a simple, quadratic, distribution construction for asynchronous automata, where the process architecture is tree-like. An architecture is tree-like if there is an underlying spanning tree of the...

💬 0 commentsarXiv:2601.14078v1PDF
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Posted in cs.IT · 2026-01-20 · Sahan Liyanaarachchi, Sennur Ulukus, Nail Akar

Utilizing the Perceived Age to Maximize Freshness in Query-Based Update Systems

Query-based sampling has become an increasingly popular technique for monitoring Markov sources in pull-based update systems. However, most of the contemporary literature on this assumes an exponential distribution for query delay and often relies on the assumption that the feedback or replies to the queries are instantaneous. In this...

💬 0 commentsarXiv:2601.14075v2PDF
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Posted in cs.CV · 2026-01-20 · Nattapong Kurpukdee, Adrian G. Bors

Unsupervised Video Class-Incremental Learning via Deep Embedded Clustering Management

Unsupervised video class incremental learning (uVCIL) represents an important learning paradigm for learning video information without forgetting, and without considering any data labels. Prior approaches have focused on supervised class-incremental learning, relying on using the knowledge of labels and task boundaries, which is...

💬 0 commentsarXiv:2601.14069v1PDF
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Posted in cs.LO · 2026-01-20 · Philippe Heim, Rayna Dimitrova

Modular Attractor Acceleration in Infinite-State Games (Full Version)

Infinite-state games provide a framework for the synthesis of reactive systems with unbounded data domains. Solving such games typically relies on computing symbolic fixpoints, particularly symbolic attractors. However, these computations may not terminate, and while recent acceleration techniques have been proposed to address this...

💬 0 commentsarXiv:2601.14068v1PDF
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Posted in cs.CV · 2026-01-20 · Hendrik Möller, Hanna Schoen, Robert Graf, Matan Atad, Nathan Molinier, Anjany Sekuboyina, Bettina K. Budai, Fabian Bamberg, Steffen Ringhof, Christopher Schlett, Tobias Pischon, Thoralf Niendorf, Josua A. Decker, Marc-André Weber, Bjoern Menze, Daniel Rueckert, Jan S. Kirschke

VERIDAH: Solving Enumeration Anomaly Aware Vertebra Labeling across Imaging Sequences

The human spine commonly consists of seven cervical, twelve thoracic, and five lumbar vertebrae. However, enumeration anomalies may result in individuals having eleven or thirteen thoracic vertebrae and four or six lumbar vertebrae. Although the identification of enumeration anomalies has potential clinical implications for chronic...

💬 0 commentsarXiv:2601.14066v1PDF
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Posted in cs.CL · 2026-01-20 · Mohsinul Kabir, Tasnim Ahmed, Md Mezbaur Rahman, Shaoxiong Ji, Hassan Alhuzali, Yuechen Jiang, Jimin Huang, Sophia Ananiadou

XCR-Bench: Benchmarking Cross-Cultural Reasoning in LLMs via Culture-Specific Items and Hall's Triad

Cross-cultural competence in large language models (LLMs) requires understanding and adapting Culture-Specific Items (CSIs) across varying cultural contexts. However, progress in evaluating this capability remains limited by the lack of high-quality CSI-annotated corpora with parallel cross-cultural sentence pairs. We introduce...

💬 0 commentsarXiv:2601.14063v2PDF
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Posted in cs.CR · 2026-01-20 · William Pan, Guiran Liu, Binrong Zhu, Qun Wang, Yingzhou Lu, Beiyu Lin, Rose Qingyang Hu

Rethinking On-Device LLM Reasoning: Why Analogical Mapping Outperforms Abstract Thinking for IoT DDoS Detection

The rapid expansion of IoT deployments has intensified cybersecurity threats, notably Distributed Denial of Service (DDoS) attacks, characterized by increasingly sophisticated patterns. Leveraging Generative AI through On-Device Large Language Models (ODLLMs) provides a viable solution for real-time threat detection at the network...

💬 0 commentsarXiv:2601.14343v1PDF
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Posted in cs.LG · 2026-01-20 · Vincent Gurgul, Ying Chen, Stefan Lessmann

Variational Quantum Circuit-Based Reinforcement Learning for Dynamic Portfolio Optimization

This paper presents a Quantum Reinforcement Learning (QRL) solution to the dynamic portfolio optimization problem based on Variational Quantum Circuits. The implemented QRL approaches are quantum analogues of the classical neural-network-based Deep Deterministic Policy Gradient and Deep Q-Network algorithms. Through an empirical...

💬 0 commentsarXiv:2601.18811v2PDF
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Posted in cs.CV · 2026-01-20 · Yongcong Ye, Kai Zhang, Yanghai Zhang, Enhong Chen, Longfei Li, Jun Zhou

Fine-Grained Zero-Shot Composed Image Retrieval with Complementary Visual-Semantic Integration

Zero-shot composed image retrieval (ZS-CIR) is a rapidly growing area with significant practical applications, allowing users to retrieve a target image by providing a reference image and a relative caption describing the desired modifications. Existing ZS-CIR methods often struggle to capture fine-grained changes and integrate visual...

💬 0 commentsarXiv:2601.14060v1PDF
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Posted in cs.PL · 2026-01-20 · Andrea Gilot, Axel Bergström, Eva Darulova

Verifying Floating-Point Programs in Stainless

We extend the Stainless deductive verifier with floating-point support, providing the first automated verification support for floating-point numbers for a subset of Scala that includes polymorphism, recursion and higher-order functions. We follow the recent approach in the KeY verifier to axiomatise reasoning about mathematical...

💬 0 commentsarXiv:2601.14059v1PDF
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Posted in cs.CV · 2026-01-20 · Andrea Rigo, Luca Stornaiuolo, Weijie Wang, Mauro Martino, Bruno Lepri, Nicu Sebe

POCI-Diff: Position Objects Consistently and Interactively with 3D-Layout Guided Diffusion

We propose a diffusion-based approach for Text-to-Image (T2I) generation with consistent and interactive 3D layout control and editing. While prior methods improve spatial adherence using 2D cues or iterative copy-warp-paste strategies, they often distort object geometry and fail to preserve consistency across edits. To address these...

💬 0 commentsarXiv:2601.14056v1PDF
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Posted in cs.CV · 2026-01-20 · Andrea Protani, Marc Molina Van Den Bosch, Lorenzo Giusti, Heloisa Barbosa Da Silva, Paolo Cacace, Albert Sund Aillet, Miguel Angel Gonzalez Ballester, Friedhelm Hummel, Luigi Serio

Decoder-Free Supervoxel GNN for Accurate Brain-Tumor Localization in Multi-Modal MRI

Modern vision backbones for 3D medical imaging typically process dense voxel grids through parameter-heavy encoder-decoder structures, a design that allocates a significant portion of its parameters to spatial reconstruction rather than feature learning. Our approach introduces SVGFormer, a decoder-free pipeline built upon a...

💬 0 commentsarXiv:2601.14055v1PDF
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Posted in cs.CR · 2026-01-20 · Zhihao Dou, Dongfei Cui, Weida Wang, Anjun Gao, Yueyang Quan, Mengyao Ma, Viet Vo, Guangdong Bai, Zhuqing Liu, Minghong Fang

SecureSplit: Mitigating Backdoor Attacks in Split Learning

Split Learning (SL) offers a framework for collaborative model training that respects data privacy by allowing participants to share the same dataset while maintaining distinct feature sets. However, SL is susceptible to backdoor attacks, in which malicious clients subtly alter their embeddings to insert hidden triggers that...

💬 0 commentsarXiv:2601.14054v2PDF
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Posted in cs.LG · 2026-01-20 · Badri N. Patro, Vijay S. Agneeswaran

LLMOrbit: A Circular Taxonomy of Large Language Models -From Scaling Walls to Agentic AI Systems

The field of artificial intelligence has undergone a revolution from foundational Transformer architectures to reasoning-capable systems approaching human-level performance. We present LLMOrbit, a comprehensive circular taxonomy navigating the landscape of large language models spanning 2019-2025. This survey examines over 50 models...

💬 0 commentsarXiv:2601.14053v2PDF
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Posted in cs.CV · 2026-01-20 · Haoran Xu, Yanlin Liu, Zizhao Tong, Jiaze Li, Kexue Fu, Yuyang Zhang, Longxiang Gao, Shuaiguang Li, Xingyu Li, Yanran Xu, Changwei Wang

Vision Also You Need: Navigating Out-of-Distribution Detection with Multimodal Large Language Model

Out-of-Distribution (OOD) detection is a critical task that has garnered significant attention. The emergence of CLIP has spurred extensive research into zero-shot OOD detection, often employing a training-free approach. Current methods leverage expert knowledge from large language models (LLMs) to identify potential outliers....

💬 0 commentsarXiv:2601.14052v1PDF
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Posted in cs.CL · 2026-01-20 · Peter Devine, Mardhiyah Sanni, Farid Adilazuarda, Julieta Gil Loizaga, Barry Haddow

Kakugo: Distillation of Low-Resource Languages into Small Language Models

We present Kakugo, a novel and cost-effective pipeline designed to train general-purpose Small Language Models (SLMs) for low-resource languages using only the language name as input. By using a large teacher model to generate synthetic prompts and translate instruction datasets, we produced training data and SLMs for 54 low-resource...

💬 0 commentsarXiv:2601.14051v1PDF