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arXiv preprints from January 1, 2026 through July 21, 2026 — 00:22:58 EST

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Posted in cs.CV · 2026-01-21 · Xinquan Yang, Xuguang Li, Mianjie Zheng, Xuefen Liu, Kun Tang, Kian Ming Lim, He Meng, Jianfeng Ren, Linlin Shen

RegFreeNet: A Registration-Free Network for CBCT-based 3D Dental Implant Planning

As the commercial surgical guide design software usually does not support the export of implant position for pre-implantation data, existing methods have to scan the post-implantation data and map the implant to pre-implantation space to get the label of implant position for training. Such a process is time-consuming and heavily...

💬 0 commentsarXiv:2601.14703v1PDF
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Posted in cs.AI · 2026-01-21 · Zecong Tang, Zixu Wang, Yifei Wang, Weitong Lian, Tianjian Gao, Haoran Li, Tengju Ru, Lingyi Meng, Zhejun Cui, Yichen Zhu, Qi Kang, Kaixuan Wang, Yu Zhang

Drive-P2D: A Progressive Perception-to-Decision Benchmark for VLMs in Autonomous Driving

Autonomous driving requires reliable perception and safe decision-making in complex scenarios. Recent vision-language models (VLMs) demonstrate reasoning and generalization abilities, opening new possibilities for autonomous driving; however, existing benchmarks often evaluate perception and decision-making separately, limit failure...

💬 0 commentsarXiv:2601.14702v2PDF
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Posted in stat.AP · 2026-01-21 · Yuan Ji, Ph. D

Regulatory Expectations for Bayesian Methods in Drug and Biologic Clinical Trials: A Practical Perspective on FDA's 2026 Draft Guidance

The U.S. Food and Drug Administration (FDA) released a landmark draft guidance in January 2026 on the use of Bayesian methodology to support primary inference in clinical trials of drugs and biological products. For sponsors, the central message is not merely that ``Bayes is allowed,'' but that Bayesian designs should be justified...

💬 0 commentsarXiv:2601.14701v1PDF
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Posted in cs.CL · 2026-01-21 · Chongxuan Huang, Lei Lin, Xiaodong Shi, Wenping Hu, Ruiming Tang

DARL: Encouraging Diverse Answers for General Reasoning without Verifiers

Reinforcement Learning with Verifiable Rewards (RLVR) has demonstrated promising gains in enhancing the reasoning capabilities of large language models. However, its dependence on domain-specific verifiers significantly restricts its applicability to open and general domains. Recent efforts such as RLPR have extended RLVR to general...

💬 0 commentsarXiv:2601.14700v1PDF
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Posted in eess.AS · 2026-01-21 · Ju-ho Kim, Youngmoon Jung, Joon-Young Yang, Jaeyoung Roh, Chang Woo Han, Hoon-Young Cho

Triage knowledge distillation for speaker verification

Deploying speaker verification on resource-constrained devices remains challenging due to the computational cost of high-capacity models; knowledge distillation (KD) offers a remedy. Classical KD entangles target confidence with non-target structure in a Kullback-Leibler term, limiting the transfer of relational information. Decoupled...

💬 0 commentsarXiv:2601.14699v1PDF
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Posted in cs.NE · 2026-01-21 · Ziqing Li, Myung Cho, Qiutong Jin, Weiyu Xu

Repair Brain Damage: Real-Numbered Error Correction Code for Neural Network

We consider a neural network (NN) that may experience memory faults and computational errors. In this paper, we propose a novel real-number-based error correction code (ECC) capable of detecting and correcting both memory errors and computational errors. The proposed approach introduces structures in the form of real-number-based...

💬 0 commentsarXiv:2602.00076v1PDF
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Posted in cs.CL · 2026-01-21 · Michael Theologitis, Preetam Prabhu Srikar Dammu, Chirag Shah, Dan Suciu

ClaimDB: A Fact Verification Benchmark over Large Structured Data

Real-world fact-checking often involves verifying claims grounded in structured data at scale. Despite substantial progress in fact-verification benchmarks, this setting remains largely underexplored. In this work, we introduce ClaimDB, a fact-verification benchmark where the evidence for claims is derived from compositions of...

💬 0 commentsarXiv:2601.14698v2PDF
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Posted in cs.IR · 2026-01-21 · Shutong Qiao, Wei Yuan, Tong Chen, Xiangyu Zhao, Quoc Viet Hung Nguyen, Hongzhi Yin

When Text-as-Vision Meets Semantic IDs in Generative Recommendation: An Empirical Study

Semantic ID learning is a key interface in Generative Recommendation (GR) models, mapping items to discrete identifiers grounded in side information, most commonly via a pretrained text encoder. However, these text encoders are primarily optimized for well-formed natural language. In real-world recommendation data, item descriptions...

💬 0 commentsarXiv:2601.14697v1PDF
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Posted in cs.CL · 2026-01-21 · Zhaiyu Fang, Ruipeng Sun

AdaTIR: Adaptive Tool-Integrated Reasoning via Difficulty-Aware Policy Optimization

Tool-Integrated Reasoning (TIR) has significantly enhanced the capabilities of Large Language Models (LLMs), yet current agents tend to exhibit cognitive offloading, redundantly invoking external tools even for simple tasks. In this paper, we suggest that true agentic intelligence requires not just tool invocation, but the adaptive...

💬 0 commentsarXiv:2601.14696v1PDF
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Posted in cs.LG · 2026-01-21 · Yutong Chen, Jiandong Gao, Ji Wu

CoScale-RL: Efficient Post-Training by Co-Scaling Data and Computation

Training Large Reasoning Model (LRM) is usually unstable and unpredictable, especially on hard problems or weak foundation models. We found that the current post-training scaling strategy can still improve on these cases. We propose CoScale-RL, a novel scaling strategy with better data and computational efficiency. We first scale up...

💬 0 commentsarXiv:2601.14695v1PDF
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Posted in cs.LG · 2026-01-21 · Pengfei Ding, Yan Wang, Guanfeng Liu

Re-understanding Graph Unlearning through Memorization

Graph unlearning (GU), which removes nodes, edges, or features from trained graph neural networks (GNNs), is crucial in Web applications where graph data may contain sensitive, mislabeled, or malicious information. However, existing GU methods lack a clear understanding of the key factors that determine unlearning effectiveness,...

💬 0 commentsarXiv:2601.14694v1PDF
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Posted in cs.LG · 2026-01-21 · Jianwen Sun, Xinrui Li, Fuqing Li, Xiaoxuan Shen

Beyond Error-Based Optimization: Experience-Driven Symbolic Regression with Goal-Conditioned Reinforcement Learning

Symbolic Regression aims to automatically identify compact and interpretable mathematical expressions that model the functional relationship between input and output variables. Most existing search-based symbolic regression methods typically rely on the fitting error to inform the search process. However, in the vast expression space,...

💬 0 commentsarXiv:2601.14693v1PDF
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Posted in physics.med-ph · 2026-01-21 · Heekyu Kim, Hugon LEe, Minwoo Park, Seunghwa Ryu

Morphology-, Noise-, and Resolution-Robust Ultrasound Elasticity Imaging with Fourier Neural Operators

Ultrasound-based elasticity imaging is a non-invasive technique for estimating tissue stiffness fields from displacement fields obtained by comparing ultrasound signals before and after compression. While recent deep learning approaches have enabled faster and more accurate elasticity estimation compared to traditional methods,...

💬 0 commentsarXiv:2601.14692v1PDF
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Posted in cs.AI · 2026-01-21 · Muhammad Khalifa, Lajanugen Logeswaran, Jaekyeom Kim, Sungryull Sohn, Yunxiang Zhang, Moontae Lee, Hao Peng, Lu Wang, Honglak Lee

Gaming the Judge: Unfaithful Chain-of-Thought Can Undermine Agent Evaluation

Large language models (LLMs) are increasingly used as judges to evaluate agent performance, particularly in non-verifiable settings where judgments rely on agent trajectories including chain-of-thought (CoT) reasoning. This paradigm implicitly assumes that the agent's CoT faithfully reflects both its internal reasoning and the...

💬 0 commentsarXiv:2601.14691v2PDF
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Posted in cs.CV · 2026-01-21 · Yian Huang, Qing Qin, Aji Mao, Xiangyu Qiu, Liang Xu, Xian Zhang, Zhenming Peng

FeedbackSTS-Det: Sparse Frames-Based Spatio-Temporal Semantic Feedback Network for Moving Infrared Small Target Detection

Infrared small target detection (ISTD) has been a critical technology in defense and civilian applications over the past several decades, such as missile warning, maritime surveillance, and disaster monitoring. Nevertheless, moving infrared small target detection still faces considerable challenges: existing models suffer from...

💬 0 commentsarXiv:2601.14690v2PDF
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Posted in eess.SY · 2026-01-21 · Hyeongon Park, Daniel K. Molzahn, Rahul K. Gupta

Ramping-aware Enhanced Flexibility Aggregation of Distributed Generation with Energy Storage in Power Distribution Networks

Power distribution networks are increasingly hosting controllable and flexible distributed energy resources (DERs) that, when aggregated, can provide ancillary support to transmission systems. However, existing aggregation schemes often ignore the ramping constraints of these DERs, which can render them impractical in real...

💬 0 commentsarXiv:2601.14689v1PDF
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Posted in astro-ph.SR · 2026-01-21 · Timothy D Brandt

Closed-Form Statistical Relations Between Projected Separation, Semimajor Axis, Companion Mass, and Host Acceleration

I derive the statistical relationship between a radial velocity or astrometric acceleration (a trend), a companion's mass, and the projected separation of the companion. These relationships, expressed as probability density functions, are analytic and independent of all Keplerian orbital elements so long as orbits are randomly...

💬 0 commentsarXiv:2601.14688v2PDF
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Posted in cs.LG · 2026-01-21 · Zhihao Chen, Zirui Gong, Jianting Ning, Yanjun Zhang, Leo Yu Zhang

Beyond Denial-of-Service: The Puppeteer's Attack for Fine-Grained Control in Ranking-Based Federated Learning

Federated Rank Learning (FRL) is a promising Federated Learning (FL) paradigm designed to be resilient against model poisoning attacks due to its discrete, ranking-based update mechanism. Unlike traditional FL methods that rely on model updates, FRL leverages discrete rankings as a communication parameter between clients and the...

💬 0 commentsarXiv:2601.14687v1PDF
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Posted in cs.AI · 2026-01-21 · Shuai Wang, Yaoming Yang, Bingdong Li, Hao Hao, Aimin Zhou

IB-GRPO: Aligning LLM-based Learning Path Recommendation with Educational Objectives via Indicator-Based Group Relative Policy Optimization

Learning Path Recommendation (LPR) aims to generate personalized sequences of learning items that maximize long-term learning effect while respecting pedagogical principles and operational constraints. Although large language models (LLMs) offer rich semantic understanding for free-form recommendation, applying them to long-horizon...

💬 0 commentsarXiv:2601.14686v1PDF
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Posted in astro-ph.GA · 2026-01-21 · K. Kade, C. Yang, M. Yttergren, K. K. Knudsen, S. König, A. Amvrosiadis, S. Dye, J. Nightingale, L. Zhang, Z. Zhang, A. Cooray, P. Cox, R. Gavazzi, E. Ibar, M. J. Michałowski, P. van der Werf, R. Xue

Detailed lens modeling and kinematics of the submillimeter galaxy G09v1.97. An analysis of CO, H2O, H2O+, and dust continuum emission

The formation mechanisms of intensely starbursting galaxies at high redshift remain unknown. One possible mechanism for triggering these starbursts is mergers and interactions, but detecting these at high redshift remains a challenge. Observations of high-redshift gravitationally lensed galaxies enable studies of the interstellar...

💬 0 commentsarXiv:2601.14685v1PDF
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Posted in quant-ph · 2026-01-21 · Peng Chen, Jun Jing

Precision limit under weak-coupling with ancillary qubit

We propose a measurement-based quantum metrology protocol in a composite model, where the probe system (a spin ensemble) is coupled to an ancillary two-level system (qubit) with a general Heisenberg XXZ interaction. With an optimized and weak probe-ancilla coupling strength and a proper duration of joint evolution, the two parallel...

💬 0 commentsarXiv:2601.15354v1PDF
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Posted in cs.HC · 2026-01-21 · Zuoyu Zhang, Yancheng Zhu

Enhancing Tool Calling in LLMs with the International Tool Calling Dataset

Tool calling allows large language models (LLMs) to interact with external systems like APIs, enabling applications in customer support, data analysis, and dynamic content generation. While recent benchmarks have advanced tool-use research, they suffer from key limitations, including reliance on simulated or restricted APIs, limited...

💬 0 commentsarXiv:2603.05515v1PDF
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Posted in cs.SD · 2026-01-21 · Kanami Imamura, Tomohiko Nakamura, Kohei Yatabe, Hiroshi Saruwatari

Dissecting Performance Degradation in Audio Source Separation under Sampling Frequency Mismatch

Audio processing methods based on deep neural networks are typically trained at a single sampling frequency (SF). To handle untrained SFs, signal resampling is commonly employed, but it can degrade performance, particularly when the input SF is lower than the trained SF. This paper investigates the causes of this degradation through...

💬 0 commentsarXiv:2601.14684v1PDF
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Posted in cs.AI · 2026-01-21 · Aisvarya Adeseye, Jouni Isoaho, Seppo Virtanen, Mohammad Tahir

Local Language Models for Context-Aware Adaptive Anonymization of Sensitive Text

Qualitative research often contains personal, contextual, and organizational details that pose privacy risks if not handled appropriately. Manual anonymization is time-consuming, inconsistent, and frequently omits critical identifiers. Existing automated tools tend to rely on pattern matching or fixed rules, which fail to capture...

💬 0 commentsarXiv:2601.14683v1PDF
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Posted in math.KT · 2026-01-21 · Liang Guo, Hang Wang, Xiufeng Yao

The K-theory of maximal and reduced Roe algebras for Hecke pairs with equivariant coarse embeddings

In this paper, we generalize the Dirac-dual-Dirac method to Hecke pairs with equivariant coarse embeddings and establish the K-theoretic isomorphisms between the maximal and reduced equivariant Roe algebras. We also extend these results to prove the Baum--Connes conjecture in this context.

💬 0 commentsarXiv:2601.14682v2PDF