AI & Machine Learning · Thu, Oct 8, 2026

Machine learning, AI, natural language processing, computer vision and multi-agent systems.

arXiv cs.LG · cs.AI · cs.CL

ActiveMedAgent: Cost-Aware Trajectory Learning for Multimodal Medical Diagnosis

In briefActiveMedAgent: Learning Cost-Aware Diagnostic Steps for Medical AI

SummaryThis paper presents ActiveMedAgent, a framework that makes multimodal medical AI acquire tests sequentially and cost-consciously, as clinicians do, escalating to costlier tests only when they are expected to resolve diagnostic uncertainty. It uses a frozen, API-accessed vision-language model and trains a lightweight MLP controller offline on trajectories scored by diagnostic utility minus cost. Across three common benchmarks, the trajectory-based approach outperforms unguided acquisition and full-modality baselines. The authors also report that in 175 cases the agent reached a correct diagnosis with fewer channels where the full-modality baseline failed.

Weiwei Ma, Xiaobing Yu, Peijie Qiu et al.

arXiv stat.ML · cs.LG · math.PR

Accelerating Non-Smooth and Heavy-Tailed Sampling

In briefFaster sampling for non-smooth, heavy-tailed distributions using non-reversible Langevin dynamics

SummaryThis paper addresses sampling from target distributions that may be non-differentiable and heavy-tailed. It proposes non-reversible anchored Langevin dynamics (NALD) for Euclidean space and NRALD for constrained domains, adding a circulation drift from a divergence-free skew-symmetric matrix field while preserving the target distribution without density derivatives. Using finite-time non-asymptotic convergence, large deviations and asymptotic variance analysis, the authors show faster convergence than reversible counterparts, and numerical experiments demonstrate efficiency.

Pervez Ali, Xiaoyu Wang, Yingli Wang et al.

arXiv cs.CV

IntrinSync: Joint Intrinsic Decomposition and Reciprocal Rendering

In briefIntrinSync: Jointly Splitting an Image into Intrinsic Properties and Re-rendering It

SummaryIntrinSync is a framework that splits an RGB image into linked intrinsic maps, including albedo, shading, surface normal, roughness, and metallic maps, and couples inverse and forward rendering through a dual cycle-consistent objective. The authors report competitive results on intrinsic estimation and forward rendering across three datasets, with improved coherence and physical consistency. The framework also lets users edit intrinsic properties and render them back into RGB images.

Zheng Gu, Rui Huang, Xilu Zhang et al.

arXiv cs.CL

The "10th Juror": Open-Set Standpoint Screening for Bureaucratic Bias Detection

In briefThe "10th Juror": Open-set standpoint screening for detecting bias in bureaucratic language

SummaryThis paper studies closed-loop bias governance for Dutch government documents, where a system detects biased language, grounds decisions in legal evidence, rewrites problematic sentences, and verifies the rewrites. The proposed MARS-Gov multi-agent framework creates a dynamic "10th juror" when screening finds an uncovered group. On the DGDB dataset it reports an F1 of 0.880 and reduces unnecessary interventions to 2.5%.

Yuchen Miao, Zijun Wang, Chang Han et al.

★★★★☆ Notable
arXiv cs.CL · cs.CY · cs.LG

Can a System-One LLM Perform Knowledge Tracing When Few or No Learners Are Logged?

In briefCan a fast, single-pass LLM track learners' knowledge when little or no learner data exists?

SummaryThe paper studies knowledge tracing, which predicts a learner's mastery from their answer history, for new courses or platforms with few or no logged learners. It tests an off-the-shelf System-One LLM that returns a probability in a single pass, without fine-tuning. Across seven datasets, the method with no target-platform data reaches a mean AUC of .706, above the best of 28 deep KT models trained on 8 learners and above a System-Two reasoning-and-voting method, at about 1/100 of its API cost. Adding examples and similar-learner statistics from logged learners raises the mean AUC to .722.

WhyProposes single-pass System-One LLM knowledge tracing for cold-start learners, beating deep KT on seven datasets with ablations and reader and contamination checks; impact is mainly in educational col

Unggi Lee, Haeun Park

arXiv cs.LG

QUILT: Rethinking Sparse-Attention Prefill through Shared Query Execution

In briefQUILT: Shared query execution to speed up sparse attention prefill

SummarySparse attention lowers the cost of long-context attention, but current kernels process each query separately and repeatedly load shared key-value entries. QUILT jointly processes neighboring queries and reuses their shared KV entries to cut redundant memory traffic and computation. On LongBench with GLM-5.3 and DeepSeek-3.2, it reduces average kernel latency by up to 55.1% and time-to-first-token by up to 36.8% compared with a state-of-the-art sparse-attention kernel, with negligible accuracy loss.

Zhenduo Zhao, Qihui Zhou, Mingcong Song et al.

arXiv cs.LG

Machine Learning Optimization for Enhanced OS Fingerprinting

In briefMachine learning to improve OS fingerprinting accuracy

SummaryThis paper studies how to identify the operating system of network hosts passively by analyzing TCP/IP packets. It uses the CIC-IDS2017 dataset and introduces OsirisML, a command-line tool that preprocesses packets with nPrint and trains XGBoost models. With random train-test splits, accuracy reached 97.66% on a down-sampled Friday subset and 84.69% on the full Friday capture. On the full Monday capture, which has no attacks, accuracy was 73.83% with an F-1 score of 79.38%.

Jae Sung Kim, Spencer Ekeroth, Jeremy Neale

arXiv cs.CL · cs.AI · cs.LG

SFT-as-Context Mitigates Forgetting in Supervised Fine-Tuning

In briefSFT-as-context: Reducing Forgetting When Fine-Tuning Language Models

SummarySupervised fine-tuning gives language models specialized skills but often makes them forget general abilities of their original version. This paper proposes SFT-as-context, a training-free method where the original model uses the fine-tuned model's response as context to answer queries. Across 19 model pairs and 11 benchmarks, it stays close to the fine-tuned model on specialized tasks and near the original model on general tasks.

Kenan Tang, Andong Hua, Chengxuan Qian et al.

arXiv cs.AI · cs.CL

GameCommBench: A Unified Benchmark and Type-Aware Evaluation for AI-Generated Game Commentary

In briefGameCommBench: A unified benchmark for evaluating AI-generated game commentary by type

SummaryThis paper introduces GameCommBench, a unified benchmark covering board games, sports, and esports, with commentary aligned to game contexts and labeled by commentary type. It also proposes TACE, a structured evaluation framework that assesses different commentary types, and validates its reliability and agreement with human judges. Benchmarking representative AI commentators reveals uneven capability profiles, with live observation and strategic analysis identified as major bottlenecks.

Qirui Zheng, Zhengteng Lin, Yunyi Xiao et al.

arXiv cs.AI

Balancing Reference Guidance and Free Generation in Trajectory Rollouts for Reasoning RL

In briefBalancing Reference Guidance and Free Generation in Reasoning RL Rollouts

SummaryThe paper studies how much reference-solution guidance to give a reasoning model during training. It uses prefix continuation, where the model continues from a reference prefix and falls back to the full reference if verification fails, and analyzes the KL divergence of the resulting trajectories from the ideal distribution. Based on this analysis, it proposes Adaptive Reference Guidance (ARG), a learned prefix selector applied to all-failure groups in GRPO. Experiments on Qwen3-4B and Qwen3-8B across five math reasoning benchmarks report that ARG achieves the highest aggregate pass@12 with competitive average sampled accuracy.

Hanyu Wang, Nakul Agarwal, Hossein Nourkhiz Mahjoub et al.

arXiv cs.AI

When Interfaces Speak: Data-Aware Generative UI Harness for Active Interaction

In briefWhen Interfaces Speak: A Data-Aware Generative UI Framework for Active Interaction

SummaryThe paper proposes GenUI-Harness, a multi-agent framework in which a Tool Agent retrieves information and executes tasks while a GUI Coder Agent identifies ambiguities and generates front-end code for structured interfaces. The authors also introduce UI-TAU Bench, a benchmark built on 10 real-world domain databases. Reported results include a 4B backbone's Pass@3 rising from 9.33% to 58.00%, and average dialogue rounds falling from 3.4 to 1.2 in a reviewer survey.

Xiaolong Li, Xiaohan Xu, Jinyang Li et al.

arXiv cs.CL · cs.AI Code

CoTS: Competitive Token Selection for Latent Reasoning in Large Language Models

In briefCoTS: Competitive Token Selection for Latent Reasoning in Language Models

SummaryThis paper proposes CoTS, a training-free method that improves latent reasoning in large language models. At each step it uses the probability competition between the two most likely next tokens to continuously balance discrete token commitment with soft embeddings. When one candidate dominates, the representation stays close to the discrete token; as competition grows, the soft representation gets more weight. The authors report consistent gains over standard chain-of-thought and prior training-free latent methods on six reasoning benchmarks, and release their code.

Jie Yu, Yuxi Sun, Zhaoxu Li et al.

arXiv cs.AI

OpenProblemBench: Benchmarking AI on Open Problems in the Foundational Theoretical Sciences

In briefOpenProblemBench: A Benchmark for AI on Unsolved Problems in Foundational Theoretical Science

SummaryThis paper introduces OpenProblemBench, a benchmark of 82 unresolved problems from mathematics and theoretical physics. Four evaluator models judge the correctness, completeness, and progress of each submitted solution without reference answers. The top configuration, GPT-6-Astra, reaches a mean judged solve rate of 14.0%, while other evaluated models score between 2.4% and 6.7%.

Zhiyi Li, Sihan Hu, Tianning Xiao et al.

arXiv cs.CV

MCL: Meta Convolution Layer

In briefMCL: a layer that generates input-adaptive convolution kernels via high-order polynomials

SummaryThis paper proposes the Meta Convolution Layer (MCL), which models the convolution kernel as an input-conditioned function using a high-order polynomial expansion, rather than a linear mix of a few basis kernels. It uses nested residual blocks to generate a single adaptive kernel and can be plugged into CNN and transformer backbones. The authors report Top-1 accuracy gains on ImageNet of 6.61% for ResNet-18, 3.42% for ResNet-50, and 3.05% for ResNet-101.

Naim Reza, Md Al Amin, and Ho Yub Jung

arXiv cs.LG

Dynamics as Code: On Model Compression via Dynamic System

In briefDynamics as Code: Compressing Neural Networks with Dynamic Systems

SummaryThis paper treats model compression as compact weight representation, encoding high-dimensional parameters as indices along a dynamic system trajectory and recovering them during decompression. The authors prove that under a Diophantine condition, a finite trajectory forms an ε-net over the weight space, and unify four families of dynamic systems within one framework. Experiments on ResNet-18 and Qwen models report competitive compression ratios without post-hoc retraining.

Fan Gao, Wei Su, Juntong Fan et al.

arXiv cs.CV

DiscoVL: Unveiling Disentangled C ross-Modal Representation Learning via Orthogonal Adversarial Regularization for V ision-Language Models

In briefDiscoVL: Disentangled vision-language learning using orthogonal adversarial regularization

SummaryThis paper presents DiscoVL, a framework for adapting pre-trained vision-language models to new downstream tasks while preserving generalization. It combines a multi-branch low-rank residual aligner that enables bidirectional visual-textual feedback at each layer with an orthogonal regularization for adversarial triplet loss to prevent centroid collapse. The authors report consistent improvements over state-of-the-art methods across 15 benchmarks for base-to-novel generalization, cross-dataset evaluation, and few-shot learning.

Mengping Dong, Jinbao Li, Fei Li

arXiv cs.CL · cs.LG

Lapras: Latent Reasoning for Time Series Language Models

In briefLapras: latent reasoning method for time series language models

SummaryThe paper proposes Lapras, a post-training framework that gives time series language models latent reasoning, so they think through continuous thoughts in a joint time series-language space and output text only for the final answer. It uses teacher-student self-distillation, where a teacher trained on explicit chain-of-thought traces transfers its reasoning ability by aligning hidden states at the answer stage. Across five time series question answering benchmarks, Lapras improves average F1 by up to 10.79% over explicit chain-of-thought while generating 23.9x fewer tokens.

Yuliang Chen, Yu Yvonne Wu, Patrick Langer et al.

arXiv cs.LG · physics.flu-dyn

Cova-PINN: Cross-Domain Conservation Physics-Informed Neural Network for Fluid-Solid Conjugate Heat Transfer in Complex Geometries

In briefCova-PINN: A conservation-based neural network for heat transfer between fluids and solids in complex shapes

SummaryThe paper proposes Cova-PINN, a multi-domain physics-informed neural network for solving fluid-solid conjugate heat transfer in complex geometries. It jointly enforces cross-domain energy balances on local control volumes and closure on paired walls at the whole-exchanger scale. Tested on four TPMS heat exchangers and a DualMS design, it reduces average outlet-temperature error by 37.7% and device-level closure error by 60.2% relative to the closest baseline, MUSA-PINN-CHT.

Weizheng Zhang, Xunjie Xie, Hao Pan et al.

arXiv cs.CV Code

TKCAM: Text and Keyframe to Camera Trajectory Generation

In briefTKCAM: Generating Camera Paths from Text and Keyframes

SummaryThis paper presents TKCAM, a framework that generates camera motion trajectories from free-form text prompts and sparse RGB keyframes at selected timestamps. Camera dynamics are encoded as 12-dimensional kinematic features and discretized with a Residual Vector Quantizer, then reconstructed and refined by a two-stage masked transformer. The authors also curate the RealEstate10K-Cap dataset and report that TKCAM surpasses recent baselines on FID, text-motion matching, and retrieval metrics.

Haozhe Yang, Zhiyang Dou, Zekai Gu et al.

arXiv cs.CV · eess.IV

Skeleton-Guided Progressive Test-Time Adaptation for Thin Curvilinear Structures

In briefSkeleton-guided progressive test-time adaptation for segmenting thin curved structures like vessels and roads

SummaryThis paper addresses segmentation of thin curvilinear structures, where small pixel errors can break global connectivity, especially under cross-modality domain shifts. The proposed SGP-TTA method combines Progressive Batch Normalization, which gradually shifts normalization statistics from source to target, and Consensus Skeleton Recall, which builds a structural target from geometrically aligned multi-view predictions and updates only BN affine parameters. Experiments reportedly show better topological connectivity than existing test-time adaptation methods, with the largest gains under cross-modality shift.

Boa Jang, JunGyu Lee, Gwanho Lee et al.

arXiv cs.CV · cs.AI

Continuous Ground-Truth Construction and a Recovery Policy for Air--Water Robotic Tracking

In briefGround-truth dataset and recovery policy for robot tracking across air and water

SummaryThe paper addresses visual tracking across the air-water interface, where splashes, refraction, and reflections corrupt observations. The authors build an evaluation-only test set of 22,346 frames by synchronizing camera frames with motion-capture poses, projecting target geometry, and correcting underwater projection. They also propose CMRP, a confidence-triggered template selection policy that assists MixFormerV2 without retraining its backbone. CMRP reports 49.90 Macro Success AUC, 2.95 points above MixFormerV2 Official.

Jiangong Xiao, Zhe Sun, Kanzhong Yao et al.

arXiv cs.LG · cs.AI

PeekKV: The First Content Token Already Knows Which Heads Matter

In briefPeekKV: A Method That Uses the First Content Token to Find Key Attention Heads for Cache Compression

SummaryThis paper addresses the memory bottleneck of the KV cache in LLM serving, which grows linearly with context length. The proposed PeekKV method observes a single content token right after prefill to jointly score attention head groups and token importance, then allocates cache budgets and keeps top-scoring tokens accordingly. It needs no offline profiling or training. On four public benchmarks, the authors report the highest accuracy in more than half of per-model comparisons, and on Llama-3.1-8B-Instruct it keeps 95.7% and 95.9% of full-cache accuracy at 10% and 1.5% memory budgets on RULER and LongBench, respectively.

Minyoung Go, Yongjun Park

arXiv cs.AI

Beyond Imitation: A Framework and Benchmark for LLM-Assisted Peer Review

In briefBeyond Imitation: A Framework and Benchmark for LLM-Assisted Peer Review

SummaryThis paper addresses strained peer review in machine learning by proposing a verification-centric approach that treats error detection as the core task. The authors build a scalable benchmark that inserts synthetic logical contradictions into conference papers to test whether review systems can identify them. They also introduce a Multi-Layered Review (MLR) framework that comprehends the manuscript in detail before generating reviews, reporting strong alignment with human scores and high error detection. The authors also note persistent vulnerabilities to adversarial manipulation.

Rachel S.Y. Teo, Yutaro Yamada, Shashank Kotyan et al.

arXiv cs.CV

Contrast Enhancement or Noise Reduction? On Improving Cervical Cancer Classification

In briefContrast Enhancement or Noise Reduction? Improving Cervical Cancer Image Classification

SummaryThis paper compares two image preprocessing methods, PMD noise reduction and CLAHE contrast enhancement, for classifying Pap smear images with three CNN models on the SIPaKMeD dataset. Preprocessing improved all models, and CLAHE raised the accuracy of ResNet-34 and DenseNet-121 from 76.73% to 84.16%. The PMD filter gave limited gains and slightly lowered MobileNet-V2 performance. The authors conclude that contrast enhancement is more effective than noise reduction.

Ach Khozaimi, Ulfatun Nahdhiyah

arXiv cs.LG

DaCe-DT: Data-Centric Offline Multi-Task Reinforcement Learning via Adaptive Prompts and Trajectory Correction for Heterogeneous Tasks

In briefDaCe-DT: Data-Centric Offline Multi-Task RL with Adaptive Prompts and Trajectory Correction

SummaryThis paper addresses limitations of offline multi-task reinforcement learning caused by data quality and distribution, identifying issues with prompt length use, semantically irrelevant prompt segments, and misleading supervision from fragmented trajectories. It proposes DaCe-DT, which combines length-gated prompt masking, retrieval-augmented prompt construction, and value-adaptive return calibration. Experiments on Meta-World report average improvements of 11.73% on optimal datasets and 13.34% on suboptimal datasets over state-of-the-art methods.

Xinfei Wang, Shanchen Pang, Chenhao Zhang et al.

★★★★☆ Notable
arXiv stat.ML · cs.IT · cs.LG

A General widetildeΩ(√T γ_T) Lower Bound for Kernel Bandits

In briefA general lower bound showing kernel bandit regret is near-optimal, scaling as √(Tγ_T) up to log factors.

SummaryThis paper studies kernel bandits, where an unknown function in a reproducing kernel Hilbert space is optimized through sequential noisy feedback. For general non-constant continuous kernels on compact domains, it proves a minimax regret lower bound of order √(Tγ_T/log T), where γ_T is the maximum information gain, showing existing upper bounds are near-optimal up to log factors. The authors show the log factor is unavoidable in general but can be removed under certain conditions, yielding exact Θ(√(Tγ_T)) optimal scaling for Matérn-ν kernels with ν in (0,2), γ-exponential kernels with γ in (0,2), and certain piecewise-polynomial kernels.

WhyProves a general minimax lower bound for non-constant continuous kernels, extending prior kernel-specific results and yielding tight Θ(√(Tγ_T)) rates for several kernel families.

Chenkai Ma, Jonathan Scarlett

arXiv cs.MA · cs.AI · cs.CL

When Agents Collude: Weak-to-Strong On-Policy Distillation for Mitigating Strategic Deception in Multi-Agent Systems

In briefWhen AI agents collude: a method to reduce coordinated strategic deception

SummaryThis paper studies how teams of language-model agents, compared with single agents, coordinate to act on insider information and hide the reason for a misaligned trade in a simulated trading setting. Multi-agent interaction raised misaligned-action and persistent-deception rates substantially, with the largest effects under existential pressure. The authors introduce PACT, a weak-to-strong on-policy distillation method using a smaller honesty-aligned teacher, which reduces multi-agent persistent deception from 80% to 3% under existential pressure with ethical instructions.

Eric Onyame, Runtao Zhou, Kowshik Thopalli et al.

arXiv cs.LG · cs.AI

Stability-Plasticity Balance via Singular-Vector Selection in LLM Continual Learning

In briefBalancing stability and plasticity in LLM continual learning by selecting singular-vector channels

SummaryThis paper addresses catastrophic forgetting when large language models are adapted to a specific domain, proposing SVC, a parameter-efficient method that selectively updates singular-vector channels. Each channel's adaptation benefit is estimated from domain data, and its forgetting cost is estimated using a fixed public general-domain corpus as a proxy. Trainable channels are then chosen through knee-based screening, Pareto-front filtering, and Otsu thresholding. Experiments across four LLM families and eight downstream tasks show SVC better preserves pretrained capabilities than existing PEFT baselines while achieving strong downstream performance.

Lingxiang Wang, Hainan Zhang, Liang Pang et al.

★★★★★ Notable
arXiv cs.LG · cs.GT

Optimally Pacing Budget Spending and Learning

In briefOptimally Pacing Budget Spending and Learning: Theory on budget-constrained online learning

SummaryThis paper studies budget-constrained online learning in the adversarial setting against arbitrary classes of budget-pacing experts. It gives a full-information algorithm with regret O(D√log F + √(T log F)) against experts whose cumulative spending stays within distance D of a given pacing schedule, matching lower bounds from Braverman et al. (2025). The technique is also extended to online resource allocation, achieving O(D√log F) regret when fractional allocation is allowed.

WhyMatches known lower bounds with near-optimal regret for budget-pacing experts, giving the first o(√T) guarantees, with rigorous proofs.

Mark Braverman, Jingyi Liu, Jieming Mao et al.

arXiv cs.CV

No Distillation Needed: Single-Pass Real-Time Talking Heads via Acausal Noise Shaping

In briefNo Distillation Needed: Single-Pass Real-Time Talking Heads via Acausal Noise Shaping

SummaryThis paper presents FaceGAN, a model that generates facial expressions and head pose from audio in real time for avatars and virtual agents. It uses a single-pass GAN instead of diffusion models, which need many evaluations per frame. The authors shape the driving noise acausally, since synthetic noise can be sampled ahead, while keeping the audio-to-expression path causal. The authors report generation quality matching or exceeding state-of-the-art methods and indefinite generation without drift.

Yu Han, Dejan Markovic, Alexander Richard et al.

★★★★★ Notable
arXiv cs.CL

Clinician use of language models diverges from how the models are evaluated

In briefClinicians' real use of language models does not match how the models are benchmarked.

SummaryThe study analyzes 127,833 queries from 6,342 clinicians across 35 specialties sent to an institutional AI assistant over eight months, labeling them with the RCQ-Map framework. It compares this real use with 58 public benchmarks. Documentation and administration (36.2%) and knowledge retrieval (28.9%) made up nearly two-thirds of use, while diagnosis was 3.7%, and the median benchmark included no documentation requests. The authors conclude that benchmark scores say little about performance on most of the work clinical AI is actually given.

WhySystematic comparison of 127,833 real clinical queries against 58 public benchmarks reveals a structural mismatch, with large-scale evidence and broad impact on clinical AI evaluation.

Krithik Vishwanath, Haitong Lin, Anton Alyakin et al.

arXiv cs.CV Code

Diffusion Meta-Prompting and Steering for Generalizable Foundation Model Adaptation

In briefDiffusion Meta-Prompting and Steering: A Method for Generalizable Adaptation of Foundation Models

SummaryThis paper proposes the Diffusion Meta-Prompt (DMP) model, which uses diffusion models to learn the distribution of previously learned prompts and generate new prompts from natural language task descriptions. At test time, it uses the best training-selected prompt as a latent anchor during sampling, without retraining. The authors report improved generalization across classification, retrieval, and text-to-image generation, and over 90% reduction in storage and inference costs compared with prompt retrieval methods.

Deepak Sridhar, Yi Li, Kartikeya Bhardwaj et al.

arXiv physics.chem-ph · cs.LG Code

MolP2SBench: Do LLMs Really Reason from Molecular Properties to Structure?

In briefMolP2SBench: Do LLMs Really Reason from Molecular Properties to Structure?

SummaryThis paper introduces MolP2SBench, a benchmark testing whether large language models can infer molecular structure from physical properties. Each task gives a masked molecular scaffold with known properties and asks the model to choose the missing structure from candidates. The authors shuffle or replace properties to check whether models rely on correct property-structure pairing. Evaluating seven models, they find that performance varies widely across property types, and high accuracy with a property does not necessarily mean the model responds to changes in it.

Yuhang Xie, Zhiyi Shi, Zeyi Zhang et al.

arXiv cs.LG

CityDeploy-Bench: Benchmarking Physics-Grounded Spatial Set Planning for Multi-Transmitter Network Deployment

In briefCityDeploy-Bench: A Benchmark for Physics-Based Planning of Multi-Transmitter Wireless Network Placement

SummaryThis paper introduces CityDeploy-Bench, a benchmark for planning the deployment of multiple wireless transmitters in cities, using a unified ray-tracing verifier to ground the problem in physics. It frames deployment as spatial set planning and allows controlled comparison of direct scalar rewards, relational models, and higher-order interaction structures. Experiments show that as physical coupling between transmitters grows, deployment quality depends on whether the learned utility captures collective interactions, since stronger search alone cannot compensate. The authors release CityDeploy-Data and the benchmark framework.

Chenyang Yuan, Xiaoyuan Cheng

arXiv cs.LG · cs.CL

Measuring and Mitigating Solution Mode Collapse in RLVR

In briefMeasuring and Fixing Solution Collapse in RLVR Training

SummaryThis paper introduces ModeBench, a benchmark for multi-solution tasks whose verifier reports both correctness and which solution mode was found. The authors show that RLVR post-training concentrates probability on fewer correct modes even when accuracy holds or improves, and that frontier models are already highly concentrated. They propose Re:Max, which stores one verified example per discovered mode in a replay buffer and trains on these uniformly, and report gains in both success rate and solution diversity across model scales and RL objectives.

Liv G. d'Aliberti, Marwa Abdulhai, Sofiia Druchyna et al.

arXiv cs.LG · cs.AI

Emergent Inverse-Depth Scaling From Nonlinearity In Attention

In briefInverse-depth loss decay from attention nonlinearity

SummaryThis paper studies scaling laws for large language models, noting that in linear-attention models parameter-count scaling is tied to a power-law data spectrum. The authors show that nonlinear attention makes loss decay inversely with depth across all tested data spectra. They suggest depth scaling may arise from attention nonlinearity rather than the global covariance structure.

Zirui Peng, Yizhou Liu, Ziming Liu et al.

arXiv cs.CV · cs.AI

AffordDrive3D: Affordance-Aware World-Action Modeling with Spatial Understanding

In briefAffordDrive3D: Affordance-Aware World-Action Modeling with Spatial Understanding

SummaryThis paper proposes AffordDrive3D, a world-action model for autonomous driving that jointly learns future action-relevant regions and spatial geometry. Built on a VLM backbone, it forecasts drivable areas and collision-critical regions affecting ego motion, while predicting future geometry from RGB world-model latents. On NAVSIM, it achieves state-of-the-art results of 91.3 PDMS and 89.9 EPDMS.

Tianhui Cai, Xinglong Sun, Chao Fang et al.

arXiv cs.CV

Refine Connections, Close the Gap: A Reliable Enhancement Framework for Driving Scene Topology

In briefRefining Driving Scene Topology: A Reliable Enhancement Framework for Lane Connectivity

SummaryThis paper addresses scene topology in autonomous driving, the connectivity between lanes and traffic elements needed for path planning. The authors note that current methods often fall short of their theoretical potential and that thresholding continuous scores can cause false or missing connections. They propose TopoEnhance, which treats topology enhancement as denoising-based reconstruction that recovers consistent graphs from corrupted ground truth. It improves TOP scores and the adapted Topology Jaccard Similarity across baselines without retraining.

Xiaoqi Wang, Dingyi Zhuang, David Paz et al.

arXiv cs.CV · cs.LG

Learning What to Trust in Multimodal Learning under Noisy Supervision

In briefLearning What to Trust in Multimodal Learning under Noisy Supervision: how a model decides which noisy labels to rely on

SummaryMultimodal classifiers usually need high-quality labels, which are hard to get in practice. The paper proposes REFINE, a framework that jointly uses fused and unimodal representations to detect mislabeled examples, selecting trusted representation spaces for each class via discriminative eigenvectors. The cleaner selected subset is used to update the classifier. The authors report that REFINE outperforms baseline methods across diverse tasks.

Jiashuo Zou, Xiaobo Xia

arXiv cs.AI · cs.LG Code

AgentHorizon: Evaluating Agentic Judges for Long-Horizon Computer-Use Tasks

In briefAgentHorizon: Testing AI Judges on Long Computer-Use Tasks

SummaryThis paper introduces AgentHorizon, a benchmark of 1,373 computer-use tasks, each pairing an instruction with a trajectory recorded by humans across three operating systems. Negative examples are built by swapping instructions for closely related requests, so judges must tell a successful trajectory from one that completed a similar but incompatible task. Eleven judges were evaluated, and the best, GPT-5.5, reached 80.9% balanced accuracy on the AH subset. The authors conclude that judges need to locate and verify hidden evidence within long interaction histories.[LIMIT]

Xing Han L\`u, Dheeraj Vattikonda, Sina Hajimiri et al.

arXiv cs.CV

SatFix: Absolute Visual Localization of UAVs in Satellite Maps from a Single Oblique Image

In briefSatFix: Estimating a Drone's Position and Heading on Satellite Maps from One Angled Photo

SummarySatFix is a feed-forward framework that estimates a UAV's continuous map position and viewing heading on a satellite map from a single oblique image or a short multi-view clip. It requires no explicit 3D map or auxiliary sensors, and a new University-Metric dataset is introduced for metric evaluation. With one view, 52.08% of test frames are localized within 50 m, with median position and heading errors of 45.66 m and 20.81°. With nine views, the median errors fall to 21.96 m and 8.73°.

Jiarui Zeng, Kun Shi, Chiman Vong et al.

arXiv cs.CV · cs.RO

Rendering-Free Lookahead for Question-Guided Active Vision

In briefRendering-free lookahead for choosing camera moves that reveal answers to questions

SummaryThis paper studies how a robot can move its camera to reveal task-relevant views needed to answer a question. The proposed Rendering-Free Lookahead (RFL) policy ranks candidate camera motions by predicted future answerability from a vision-language model. During training, a teacher renders future views in 3D Gaussian Splatting scenes and a student is distilled to predict these values without rendering. On 377 test episodes in unseen environments, RFL improves the mean judge score by 43% over a direct-action baseline using the same VLM.

Koya Sakamoto, Daichi Azuma, Shuhei Kurita et al.

arXiv cs.CV Code

Transforming Image Editors into Video Editors

In briefTurning Image Editors into Video Editors via Anchor Keyframes

SummaryThis paper proposes a simpler alternative to end-to-end video editing by converting a strong image editor into a video editor. It splits video editing into editing sparse keyframes and propagating those edits over time, and introduces Anchor-based Video Editing (AVE), a two-stage framework. Experiments on IVEBench and VIE-Bench report strong instruction following, temporal consistency, and content fidelity. Ablations show final video editing quality is strongly correlated with the image editor's quality.

Feng Wang, Zijie Li, Ceyuan Yang et al.

arXiv cs.CL · cs.LG

FedAlphaEdit: Null-Space-Aligned Merging for Collaborative Knowledge Editing

In briefFedAlphaEdit: Null-space-aligned merging for private, collaborative editing of language models.

SummarySeveral institutions want to combine their own private knowledge edits into one large language model without sharing raw edit requests. The authors show that naively combining null-space-constrained editing (AlphaEdit) with collaborative editing (CollabEdit) fails structurally, and they explain the cause. They propose FedAlphaEdit, which aligns local editing and server-side merging under a single null-space principle, with clients sharing projected statistics. Experiments on two architecture families show edit success and preservation close to centralized editing.

Sota Sugawara, Yukihiko Okada

arXiv cs.HC · cs.AI

Intent Graph: Navigating the Analytical Reasoning Space for Exploratory Data Analysis

In briefIntent Graph: A system for navigating analytical reasoning in exploratory data analysis

SummaryThis paper presents DAG-EDA, a system that lets analysts and an LLM co-navigate possible analyses. An intent graph breaks an ambiguous natural-language question into progressively concrete analysis tasks while allowing branching and backtracking. A multi-layered knowledge graph links domain concepts to dataset variables so analysts can inspect how their question is grounded in the data. Both graphs are built only from the dataset and the question, and results are shown as interactive dashboards. The authors illustrate the system with a usage scenario and outline a user study design to test whether it scaffolds analysts' reasoning and navigation.

Junran Yang, Shruti Badrish, Teanna Barrett et al.

arXiv cs.CV

Expression-Diverse References for Identity-Preserving Video Generation

In briefExpression-diverse reference sets for keeping a person's identity in generated videos

SummaryIdentity-preserving video generation must keep a subject's identity while creating realistic video, but a single portrait shows only one facial expression. The authors measure how face-recognition similarity changes with expression intensity and build a compact gallery of diverse expression references. They extend Stand-In to condition on these sets and synthesize extra expressions when only one portrait is available. On a controlled benchmark, both real and synthesized reference sets beat the baselines across mild, intense, and extreme expressions, with the largest gains for extreme expressions.

Tianwen Fu, Wenbin Teng, Gonglin Chen et al.

arXiv physics.ao-ph · cs.LG

A Graph Neural Network for Global Daily Fire Radiative Power Prediction at Medium-Range Lead Times

In briefGraph neural network forecasting global daily fire radiative power up to seven days ahead

SummaryThis paper presents a data-driven model that uses a spatiotemporal graph neural network to predict global fire radiative power (FRP) one to seven days ahead from the latest available observations. The model combines reanalysis meteorology, land-cover and vegetation data, recent fire history, and GBBEPx FRP as its target, and was trained on 2020–2022 data and evaluated on 2023–2024. It substantially outperforms persistence, but systematically underestimates the radiative power of large fires.

Li Zhang, Jun Wang, Isidora Jankov et al.

arXiv cs.CV · cs.AI · cs.LG

Mid-Training Language Models on Raw Video

In briefMid-training language models on raw video without captions

SummaryThis paper examines whether raw web video with no captions or text loss can serve as mid-training data for a pretrained language model. Frames are encoded as continuous visual tokens, and the model learns to predict the next visual token. Qwen3-1.7B was mid-trained on YT-Temporal-1B clips and compared with a model without mid-training under identical image-text instruction tuning. The mid-trained model scored higher on video and image benchmarks while preserving text performance.

Jaedong Hwang, Xiaoqian Shen, Ernie Chang et al.

arXiv cs.CL

Prompts versus Rules: Auditing and Controlling Speech Naturalness Behaviors in Voice User Simulators

In briefPrompting versus rule-based control of natural speech behaviors in voice user simulators

SummaryVoice user simulators used to evaluate voice agents are being extended with disfluency, interruption, and backchanneling. The authors audit the behaviors actually produced by their LLM prompting approach (tau-Voice) across three models and compare it with a rule-based injection algorithm. They find prompting is unreliable and poorly placed, while the rule-based, model-free method is more controllable and closer to natural speech.

Riqiang Wang, Elena Khasanova, Harsh Saini et al.

arXiv cs.AI

Distillation for Incrimination and Distillation for Capabilities

In briefDistillation to expose hidden misbehavior and to transfer capabilities safely

SummaryThe paper studies how knowledge distillation can be used for AI safety when a powerful model may conceal misalignment during evaluations. The authors propose Distillation for Incrimination (DFI), which transfers misalignment so that a student model admits hidden behavior more often than its teacher, and Distillation for Capabilities (DFC), which aims to transfer capabilities without misalignment. Inoculation prompting and training for more epochs on fewer unique examples are reported as effective DFC techniques, reducing transfer of an animal preference used as a misalignment proxy.

Sebastian Prasanna, Jacqueline Tay, Alek Westover

arXiv cs.CV · cs.GR

PCAsplat: Gaussian Splatting with Local PCA Regularization

In briefPCAsplat: Gaussian splatting with local PCA regularization for cleaner 3D surfaces

SummaryGaussian splatting reconstructs 3D scenes from posed images, but its rasterization losses give weak geometric guidance to Gaussians that are occluded or contribute little to the current view, causing floaters. PCAsplat adds a differentiable local PCA regularizer that acts on neighborhoods of Gaussian centers, regularizing eigenvalues to pull Gaussians onto the surface and aligning each Gaussian normal with the neighborhood normal. Experiments on DTU, Tanks and Temples, and NeRF Synthetic report splats that better approximate the reference surface with substantially fewer floaters. The surface-aligned splats also support point cloud segmentation and Poisson reconstruction.

Vitor Matias, Filipe Nascimento, Kiyohiro Nakayama et al.

★★★★☆ Notable
arXiv physics.soc-ph · cs.AI

Why LLM Agents Favor Their Group: Stakes, Observed Norms, and Reputation

In briefWhy LLM agents favor their own group: stakes, norms and reputation

SummaryThis paper studies why language-model agents favor members of their own group. Across about 4,400 small randomly labeled societies and 3.3 million audited model calls on fifteen OpenAI models and three Claude models, the authors find that bare group labels matter little when giving points costs the agent something. Favoritism instead tracks observed group behavior, extends to labeled strangers, and can be overridden by an individual's own record.

WhyRevises earlier group-favoritism findings by contrasting costly and costless settings, with 3.3 million audited calls providing strong evidence.

Yujiao Chen

arXiv cs.AI · cs.LG · math.OC

Curating Always-Loaded Context for LLM Agents: A Capacitated Assortment Model with Censored Feedback

In briefCurating always-loaded context for LLM agents as a capacitated selection problem with censored feedback

SummaryLLM agents load a fixed context file at the start of each session, and every token in it is charged again in later rounds, while larger files can degrade performance. The authors model context curation as a capacitated assortment problem, prove an upper bound on optimal file size, and show that appending every instruction with positive standalone value can be far worse than choosing an optimal subset. They also study learning from past sessions under censored feedback, where harms of missing instructions are only visible when absence causes damage. Experiments show that irrelevant rules drawn from real context files reduce language-model compliance.

Zexuan Liu, Yuning Yang, Tiancheng Zhao

arXiv cs.AI

How Narrative Wrapping Affects LLM Refusal: A Cross-Language Benchmark and Defense

In briefHow story-style wrapping makes language models less likely to refuse harmful requests, with a new benchmark and defense

SummarySafety-trained language models often refuse harmful requests stated directly but comply when the same request is wrapped in role-play or narrative. The authors measured this vulnerability in English, modern Chinese, and Classical Chinese, and built GUISE, a multilingual benchmark for studying it. They also proposed AXIS, a training method combining preference optimisation, representation alignment with the refusal direction, and an objective encouraging full refusals; it achieved the best combined safety and usability score on Qwen3-1.7B, Qwen3-4B, and GLM-4-9B.

Zhankai Ye, Yanning Wang, Yukai Jin et al.

arXiv physics.plasm-ph · cs.LG

Reconstruction of Multiscale Plasma Dynamics Across Operating Regimes

In briefReconstructing multiscale plasma behavior across operating conditions from sparse sensors

SummaryThis paper introduces ReMAIN, a neural network that rebuilds spatially detailed plasma states from a few sensors' measurement histories. It keeps the recurrent temporal encoding of SHRED but replaces its decoder with a U-Net modulated by the recurrent state, and adds an operating-parameter input. On six one-dimensional nonlinear PDE benchmarks it reduces reconstruction error on unseen trajectories compared with SHRED. It also reconstructs the regime-dependent dynamics of a collisionless E×B plasma at electric-field strengths withheld from training.

Maryam Reza, Farbod Faraji

arXiv cs.LG · physics.ao-ph

Low-rank tensor structure of precipitation and its application to satellite-reference merging

In briefLow-rank tensor model of precipitation for merging satellite and reference data

SummaryThis paper represents daily precipitation over the contiguous US as spatiotemporal tensors and shows that CP factorization preserving spatial and temporal modes reconstructs it more accurately than factorizing daily fields or unfolded matrices. It introduces TMerge, which combines IMERG satellite precipitation with sparse reference observations through shared low-rank factors. From 2019 to 2022, TMerge raised correlation from 0.53 to 0.85 and reduced RMSE and MAE by 48.2% and 29.3%.

Ryan Solgi, Rohan Shankar, Hugo A. Loaiciga

arXiv cs.LG

F³NO: Frequency-Decomposed Finite-Time Flow-map Neural Operators with Cross-Scale Conditioning

In briefF³NO: A Neural Operator for Faster, More Accurate PDE Forecasting Across Scales

SummaryThis paper introduces F³NO, a neural operator for forecasting solutions of partial differential equations. It splits frequencies into low and high branches, using updated low-frequency features to guide nonlinear refinement of fine-scale details, and can predict states at specified future times directly. For long trajectories, it predicts in parallel within short time segments and propagates recursively between segments. Experiments on five PDE benchmarks show better forecasting accuracy than autoregressive and direct-prediction baselines.

Fan Wu, Cheng Jing, Kookjin Lee

arXiv cs.LG

Invariant-Measure Reasoners: Stable Representations for Latent Reasoning

In briefInvariant-measure reasoners: stable predictions from unstable latent reasoning

SummaryLatent reasoning models repeatedly update a latent state with the same recurrent block, and the state may keep changing without settling to a fixed point, making predictions unstable. The paper introduces invariant-measure reasoners (ImR), which predict from the expected output of the prediction head under the long-run invariant distribution of latent states. On maze and Sudoku tasks, ImR reduces prediction instability and improves accuracy whether applied by fine-tuning only the prediction head of existing models or by training from scratch.

Yuto Inui, Takuya Konishi, Yoshinobu Kawahara

arXiv cs.LG

Pack and Extract: An Effective Graph-Based Approach for Feature Selection

In briefPack and Extract: A Graph-Based Method for Feature Selection

SummaryThis paper proposes an improved feature selection method built on the Independent Dominating Set (IDS) model, aimed at high-dimensional molecular biology data. The approach favors more diverse features and generalizes the independent dominating set to a node packing model, used as an intermediate step in selection. Experiments on five genetic datasets show better predictive accuracy than traditional models and more stable selected feature sets.

Faisal N. Abu-Khzam, Joseph R. Barr, Cynthia Chaaya et al.

★★★★☆ Notable
arXiv cs.CL · cs.AI

Loose Lips: Understanding Privacy Leakage in Agentic Dialogue

In briefLoose Lips: How AI agents in dialogue leak private information, and why more capable models leak more

SummaryThis paper extends CIMemories into CIMEMORIES DIALOGUE, a benchmark of 4,410 two-agent dialogues grounded in Contextual Integrity theory. The authors evaluate seven open-weight Qwen3 and Llama 3.1 models across 1- and 6-turn conversations under three prompting conditions. They find that task capability and privacy leakage are coupled, with more capable models leaking more, and thinking models leaking more than non-thinking ones. Leakage rises up to 3x from 1 to 6 turns, which the authors argue is a structural feature of current agentic systems.</summary>

WhyExtends a Contextual Integrity benchmark to 4,410 dialogues, systematically evaluating seven models and revealing capability-leakage coupling across conversation lengths.

Soumya Sharma, Ayana Hussain, Heber Hwang Arcolezi et al.

arXiv cs.CV · cs.LG Code

Region-Aware CLS Token Augmentation for Fine-Grained Image Retrieval

In briefRegion-aware CLS token augmentation for fine-grained image retrieval

SummaryThis paper argues that relying on a single global [CLS] token to represent an image can hurt fine-grained image retrieval. The authors pair the [CLS] and register tokens of the DINOv2-reg model with spatial patch tokens, extracting N x N regions as localized ROI tokens without external bounding boxes or saliency modules. These tokens are used in a ColBERT-inspired multi-vector retrieval framework with per-token alignment. Experiments reportedly show gains over a DINOv2-reg single-vector baseline while remaining practical for large-scale search.

Ian de Holanda Cavalcanti Bezerra, Vivek Trivedy, Lucas Pascotti Valem et al.

arXiv cs.CV · cs.LG

Omni-Diffusion-Distill: Few-Step Distillation of Unified Multimodal Diffusion Large Language Models

In briefOmni-Diffusion-Distill: Few-Step Distillation for Unified Multimodal Diffusion Models

SummaryThis paper proposes Omni-Diffusion-Distill, a two-stage distillation framework that compresses unified multimodal diffusion large language models, which handle both image generation and multimodal understanding, into faster students. It operates in the discrete token space and adds a pairwise collision penalty and entropy-matched guidance to address repetition and entropy collapse. The authors report reducing image generation from 128 to 8 decoding steps and understanding from 512 to 64, with 18.2x and 21.2x wall-clock speedups while maintaining competitive benchmark scores.

Hong Huang, Chenhongyi Yang, Junzhe Sun et al.

arXiv cs.LG · cs.CV

Multi-Bandwidth Distribution Matching Distillation: On the Equivalence of Distribution Matching Distillation and Drifting Models

In briefMulti-Bandwidth Distribution Matching Distillation: Equivalence Between DMD and Drifting Models

SummaryThe paper proves that converting the velocity or noise field of a pre-trained diffusion or flow model into the attraction force field of Drifting Models, and estimating the repulsion field from the generative distribution, makes training a Drifting Model equivalent to Distribution Matching Distillation (DMD/DMD2). Building on this equivalence, the authors propose Multi-Bandwidth Distribution Matching Distillation (MBDMD), an improved method viewed from the Drifting Model perspective.

Jialin Zhu, Xing Liu, Feixiang He et al.

arXiv cs.CL

Back in Style: A Sociolinguistic Approach to Authoring and Measuring Persona Fidelity in User Simulation

In briefBack in Style: Measuring How Faithfully Simulated Users Match Their Personas Using Sociolinguistics

SummaryThis pilot study addresses the low fidelity of user simulators compared with real users, which is usually judged by costly, subjective LLM evaluators. It defines personas as concrete stylistic rates grounded in observable language style, and applies two model-free tools, stylometric authorship verification and lexicon-based content analysis, as fidelity diagnostics. An A/B test across five customer-service agents found that the sociolinguistic schema improved stylistic adherence and stylometric distinguishability for most models, though style fidelity does not necessarily mean naturalness.

Lex Konnelly, Elena Khasanova, Riqiang Wang et al.

arXiv cs.CV · cs.GR

Fluid-Gen-Zero: Grounding Pretrained Video Generators in Physics without Training

In briefFluid-Gen-Zero: Making Pretrained Video Generators Follow Physics Without Retraining

SummaryThis paper presents Fluid-Gen-Zero, a training-free framework for generating videos of fluids interacting with objects. It delegates motion to a physics simulator while keeping the appearance modeling of pretrained video generators. Tested with Tora, VACE, and WanMove, the method reduces object trajectory error and fluid flow endpoint error, and it was favored by raters in a human preference study.

Hong Huang, Yuqiu Liu, Chenyu You et al.

arXiv cs.SE · cs.AI

Probabilistic Sensing, Deterministic Authority: Admitting Model-Produced Observations into Sufficiency-Checked Governance Contracts

In briefProbabilistic Sensing, Deterministic Authority: Admitting Model Observations into Governance Contracts

SummaryThe paper addresses cases where a field needed by an authority contract exists only in unstructured evidence, so a model senses it and its output is admitted only as a scored observation record. An admission policy with thresholds fitted on held-out data maps scores to true, false or unknown, with unknown denied, and a deterministic sufficiency-checked contract makes the decision. Across 36,000 model calls on two constructed domains with two sensor families, no result refuted the stated bound, and a few verdicts changed from deny to allow, all traced to contradictory records.

Gaston Besanson

arXiv cs.LG · cs.AI

Optimizing Large Language Models with Chained LMOs

In briefChained LMOs: a unified view of composed matrix-normalizing optimizers for LLM training

SummaryThe paper introduces chained linear minimization oracles, which frame optimizers like Muon as compositions of LMOs. It notes that many such chains fall outside the standard framework and can diverge on smooth convex objectives. Using linear associative memory, it shows chaining can beat Muon under anisotropic embeddings. The proposed TensorChain optimizer yields 9.6% average token savings over Muon at matched validation loss in Qwen3 0.6B and 1.7B pretraining.

Sungyoon Kim, Kaan Ozkara, Youngsuk Park

arXiv cs.LG · cs.AI · math.OC

Budgeted Multi-Source Counterfactual Annotation for Off-Policy Evaluation

In briefBudgeted Multi-Source Annotation for Off-Policy Policy Evaluation

SummaryThis paper studies how to acquire counterfactual annotations for unobserved actions from multiple sources, such as experts and large language models, under a limited budget to improve off-policy evaluation in contextual bandits. The authors formulate an integer allocation problem over context-action pairs and annotation sources to minimize the annotation-dependent variance of the estimator. They propose a majorization-minimization algorithm with dynamic-programming subroutines that monotonically improves the objective. In synthetic clinical and LLM-annotated education bandit experiments, the method reduces fixed-profile mean squared error by 20.58% and 10.77% relative to no annotation.

Biao Xiang, Ali Eshragh, Yuexing Li et al.

arXiv cs.LG

Transferability of Learned States in Neural PDE Solvers

In briefHow well learned states transfer in neural PDE solvers

SummaryThis paper examines whether reusing learned states in neural PDE solvers is genuinely useful, since final accuracy alone mixes source-side learning with target-side computation. The authors propose a reuse contract that separately measures solution accuracy, learning contribution, and numerical utility using paired state comparisons, matched information and budgets, and cost accounting. A literature audit of 12 papers and experiments on linear PDE families are reported. The authors conclude that reuse requires matched state comparisons and downstream computational evidence.

Shunye Wang, Haochen Wen, Shuo Li Liu et al.

arXiv cs.CL · cs.AI

When Citations Mislead? A Claim-Level Benchmark for Legal Hallucination Detection

In briefWhen Citations Mislead? A Claim-Level Benchmark for Legal Hallucination Detection

SummaryThis paper introduces PARCEL, a benchmark that checks whether a legal claim is supported by the authority it cites. Built from recent New York State Court of Appeals decisions, it contains 3,396 claims labeled Supported, Refuted, or Not Found. The authors evaluate several large language models zero-shot, finding strong accuracy but a tendency to wrongly mark unsupported claims as supported.

M. Mikail Demir, M. Abdullah Canbaz

arXiv cs.LG

ASPIRE: Saddle-Point Discovery through Set Prediction and Physical Refinement

In briefASPIRE: A Method for Finding Saddle Points via Set Prediction and Refinement

SummaryThis paper presents ASPIRE, a framework for finding the saddle points that govern atomic rearrangements in event-driven models of thermally activated diffusion and defect evolution. An equivariant set predictor, Ev-Quiformer, proposes multiple saddle candidates from one initial atomic environment, which are then refined with Dimer searches on the original interatomic potential. The authors also release two body-centered cubic iron vacancy datasets, and report higher reference-event coverage than a conventional Dimer baseline with roughly half the Dimer force evaluations.

Yucheng Zhao, Quanyou Zhang, Shaoxiang Qin et al.

arXiv cs.LG

Spectrally Targeted Muon

In briefSpectrally Targeted Muon: orthogonalizing only selected singular values

SummaryThe Muon optimizer orthogonalizes every update matrix, setting all singular values to one, and works well for training large language models. This paper proposes Spectrally Targeted Muon, which orthogonalizes only singular values above or below a threshold τ, interpolating between normalized SGD and Muon, with projections computed by Newton-Schulz iteration instead of SVD. Experiments on CIFAR-10 and NanoGPT speedruns indicate that small momentum singular values are not noise and that Muon's gains largely come from amplifying them. Shrinking the largest singular values keeps the parameter spectrum flat but does not drive the loss, and AdamW differs mainly in how slowly it builds structure.

Vishrut Goyal, Rohan Ramkumar

arXiv cs.RO · cs.AI

iAm.md: Robot Skill Self-Assessment through Agentic Introspection for Unknown Open-Vocabulary Domains

In briefiAm.md: Robots Self-Check Skills via Agentic Introspection in Unknown Domains

SummaryThis paper presents iAm.md, a Markdown-based standard and generation framework that helps robots check whether they and their environment actually support a requested action before generating behavior, reducing so-called grounding failures. It uses open-vocabulary semantic mapping to link vision-language detections and object segmentation to persistent object records, enabling agentic introspection. Experiments on a simulated TIAGo robot with navigation and manipulation tasks show that this standardized representation supports both skill self-assessment and generalization to executable tasks.

Vincenzo Guarino, Emanuele Musumeci, Vincenzo Suriani et al.

arXiv cs.SE · cs.AI

Cross-Provider Review as a Runtime Contract for Coding Agents: A Controlled Pilot and Fault-Injection Study

In briefCross-Provider Review Contract for Coding Agents: Pilot and Fault-Injection Study

SummaryThe paper proposes an advisory mechanism in which a second agent from a different provider reviews a coding agent's completed answer, with bounded execution, restricted reviewer permissions, complete input delivery, and per-attempt evidence. In a 20-turn controlled pilot, eight turns produced a material reviewer finding. Fault-injection testing across both reviewer backends found a false success on partial input and a cancellation defect during process reaping, both repaired. A third defect, where a reviewer exiting nonzero was counted as complete, was found in a shadow study; because exit status was not recorded per attempt, exposure cannot be resolved retrospectively, so the measurement-valid cohort restarted at zero.

Bowen Xu, Boyu Chen

arXiv cs.CV Code

LVSPM: Long Sequence View Synthesis and Pose Estimation Model

In briefLVSPM: A model that estimates camera poses and synthesizes new views from many uncalibrated images

SummaryLVSPM is a generalizable model that jointly estimates camera poses and generates novel views from uncalibrated image collections. It is trained only on RGB images and pose supervision, and uses test-time training layers to scale to hundreds of input views. On RealEstate10k, Co3Dv2, and DL3DV, it outperforms VGGT in pose estimation for 16 to 256 views, with especially large gains at strict thresholds.

Xi Chen, Yachi Zhang, Linghao Chen et al.

★★★★☆ Notable
arXiv cs.CV Code

GPU-Accelerated Computation of Persistent Homology for Topological Analysis of Image Data

In briefGPU-accelerated persistent homology for analyzing the shape of image data

SummaryThis paper presents TopoGPU, a GPU streaming pipeline that computes persistence diagrams of cubical complexes from 2D and 3D images. The input is processed chunk by chunk on the GPU, while the CPU performs the boundary matrix reduction. On every evaluated benchmark, TopoGPU outperforms Cubical Ripser, with an average end-to-end speedup of 53.24x and a maximum of 198.01x. The authors also integrate it into a topology-preserving deep network and report substantially reduced persistent homology cost during training.

WhyProposes a GPU streaming pipeline for persistent homology of image cubical complexes, with a provably persistence-preserving Morse matching and broad benchmark speedups.

Fan Wang, Hubert Wagner, Rezaul Chowdhury et al.

arXiv cs.LG · cs.AI

TRACE: A Governance Framework for Measuring Explainability Debt in Production AI Systems

In briefTRACE: A Framework for Measuring "Explainability Debt" in Live AI Systems

SummaryThis paper proposes TRACE, a seven-instrument governance framework for measuring and reducing Explainability Debt, the growing share of production AI decisions that cannot be explained when challenged. Its core metric, the Explainability Debt Score, gives the proportion of decisions below a governance-defined explainability threshold. The authors test it on a fraud detection system handling 50,000 daily transactions over twelve months and argue it offers a quantitative architecture for EU AI Act Article 13 compliance.

Harish Kant Pathak

★★★★☆ Notable
arXiv cs.AI

Learning How to Search for Plans with Exponentially Less Space

In briefLearning to search for plans using far less memory

SummaryThe paper learns per-domain search control as an indexical policy with registers, modes, and a choose rule that needs only one candidate. The authors prove that structural termination bounds every execution by a polynomial in the number of objects, so a depth-first procedure finds plans in polynomial space. Using a language model in a counterexample-guided loop, the learned policies solve 1,709 of 1,890 test tasks, more than LAMA, BFWS, and Levitron.

WhyIntroduces learned indexical policies enabling polynomial-space planning, backed by a termination proof and benchmark experiments against strong planners.

Dominik Drexler, Simon St{\aa}hlberg, Markus Fritzsche et al.

arXiv cs.LG · stat.ML

SPD-MetaFormer is what you need for small-data brain decoding

In briefSPD-MetaFormer: An attention-free design for small-data brain decoding

SummaryThe paper examines attention-based brain signal decoders on the SPD manifold and finds that their learned attention weights stay close to uniform after training. Replacing them with uniform weights has little effect on mean predictive performance. Based on this, the authors propose SPD-MetaFormer, an attention-free architecture using uniformly weighted Fréchet aggregation, which achieves competitive results on three EEG benchmarks.

Zhida Wang, Wei Lyu, Guo Yu et al.

arXiv cs.LG · cs.AI · cs.SD

SECURE-AI: Multi-Signal Uncertainty Quantification for Trustworthy Acoustic Cough Detection

In briefSECURE-AI: Multi-Signal Uncertainty Estimation for Reliable Acoustic Cough Detection

SummaryThis paper addresses acoustic cough detectors that make confident but wrong predictions when speech or noise differs from training data. It proposes SECURE-AI, which combines Monte Carlo Dropout, Temperature Scaling, and Mahalanobis distance in embedding space to flag predictions that should not be trusted. On a held-out Coswara split, embedding-space Mahalanobis distance was the strongest signal, separating true from false positives and helping flag missed coughs.

Sejal Solkhan, Feiya Xiang, Mayur Sanap et al.

arXiv cs.LG

RH-Detect: A Unified Benchmark for Reward Hacking Detection

In briefRH-Detect: A Unified Benchmark for Detecting Reward Hacking

SummaryThis paper introduces RH-Detect, which merges reward-hacking-related subsets from eleven public datasets into one schema, totaling 92,761 rows across six behavior categories. Six off-the-shelf language models from five families were tested as detectors without extra training on 5,021 evaluation units. The best model reached a pooled AUROC of 0.962, but accuracy was notably lower on the multi-turn tool-use datasets MALT and TRACE. The authors also show that input formats and training methods affect results differently across models.

Junwei Quan, Evgenii Opryshko, Rohan Subramani et al.

★★★★☆ Notable
arXiv cs.CL · cs.LG

AI4Fire: Evaluating Large Language Models on Wildfire Tasks

In briefAI4Fire: Testing How Large Language Models Handle Wildfire Tasks

SummaryThis paper evaluates large language models on five wildfire tasks, comparing runs with only the task input against runs that also receive one task-specific reference. When the reference directly contains the answer, such as a read-only SQL tool, database accuracy rises sharply for every core model. Simple rules remain hard to beat, and some open-weight models mostly copy historical medians, a weaker forecast. The authors also flag labeling and leakage hazards in public wildfire datasets and release prompts, responses, scores, code, and the survey record.

WhyPaired bare and grounded evaluation of LLMs across wildfire tasks, plus leakage hazards in public data; broad experiments across models and tasks.

Yue Zhao, Zuobin Xiong, Xiyang Hu et al.

arXiv cs.CV · cs.LG

GHARP: Real-time Gaussian Head Animation from Large-scale Reconstruction Prior

In briefGHARP: Real-time 3D Head Animation Using Large-scale Reconstruction Priors

SummaryThis paper presents GHARP, a method that animates 3D human heads in real time from a few input images and an expression signal. It splits the work into an offline identity stage that builds the subject's representation and a lightweight runtime stage that predicts expression-dependent residuals. A body alignment network is added to reduce ambiguity in body pose and clothing caused by face-only expression codes. The authors report state-of-the-art quality on the Ava-256 benchmark, running up to 13x faster on an A100 GPU with 8x fewer Gaussians.

Ali Benlalah, Sepehr Johari, Patricia Vitoria et al.

arXiv cs.LG · cs.AI

Beyond Prediction: A Component-Level Study of Concept Recovery in In-Context Learning

In briefBeyond Prediction: Component-Level Study of Concept Recovery in In-Context Learning

SummaryThis paper argues that accurate predictions from demonstrations do not show whether a language model has recovered the underlying concept. The authors decompose concepts into defining components and use controlled structural interventions to evaluate recovery at both component and whole-concept levels. They find that models often predict well despite poor whole-concept recovery, and that jointly specifying relevant attributes and their level constraints improves recovery, though this improvement is fragile.

Xufeng Liu, Fang Wan, Yi Liu

★★★★☆ Notable
arXiv cs.AI · cs.CL · cs.LG

StoreBench: A Live-Commerce Environment for Evaluating and Training Autonomous Operator Agents

In briefStoreBench: A Live-Commerce Simulator for Testing and Training AI Store-Operator Agents

SummaryThe paper presents StoreBench, a simulated live-commerce environment in which an AI agent runs a mid-size online apparel store using the same 29 tools a human merchant would. The agent must plan over long horizons and make economic decisions under uncertainty, such as supplier failures and market shocks. In tests of seven frontier LLMs, none matched a scripted heuristic policy on average, while human experts scored slightly higher than all models. The authors also report that GRPO training of a 27B model improved its held-out composite score from 0.136 to 0.373.

WhyProposes a dynamic e-commerce operator environment with anti-reward-hacking safeguards, benchmarks frontier LLMs against scripted and human baselines, and validates via GRPO training.

Daksh Raghuvanshi, Ved Vedere, Yifan Wang

arXiv cs.RO · cs.LG

Higher-Order Morphology Priors for Quadruped Reinforcement Learning Under Actuator Degradation

In briefHigher-order body-structure priors help quadruped robots keep moving when their actuators weaken

SummaryThe paper studies how quadruped robots can coordinate their joints when actuators degrade and lose strength. The authors model the Unitree Go1 as a cell complex with higher-order limb and body cells and use Hodge-based message passing in the policy. Trained under degradation, the node-edge-face Hodge actor achieved the highest return on unseen actuator degradations, with higher survival and lower velocity-tracking error. The authors conclude that higher-order morphology is a useful inductive bias for whole-body compensation.

Derek You, Zafir Shamsi, Keqin Wang et al.

arXiv cs.LG · cs.AI

Rethinking the Tradeoff Between Temporal Encoding and Nonlinear Computation in Spiking Language Models

In briefRethinking the Tradeoff Between Temporal Encoding and Nonlinear Computation in Spiking Language Models

SummarySpiking language models must balance representing continuous semantic features over short time windows against keeping costly nonlinear attention. The paper introduces Spora, which jointly designs spike encodings and attention operators using binary temporal weights so that T spikes can carry up to T bits. With four time steps, Spora reaches a 76.6 average GLUE score and 44.1 CoLA MCC, exceeding SpikeLM by 1.2 and 6.2 points; six steps raise these to 78.2 and 47.4.

Hanfei Liu, Shuchang Feng, Yanxia Chen et al.

arXiv cs.LG

World-Model Policy Arbiter for Goal-Conditioned Reinforcement Learning

In briefWorld-model policy arbiter for choosing among frozen goal-reaching policies

SummaryOffline goal-conditioned reinforcement learning produces many algorithms, none of which is best everywhere. The paper proposes WMPA, a test-time method that rolls out each frozen policy in a learned world model, scores imagined futures with a shared goal-conditioned value function, and executes the top-scoring policy for a short interval. On 18 OGBench state-based datasets, macro-average success rises from 44% for the best per-dataset policy to 58%, with significant gains on 12 datasets.

Junwei Quan, Evgenii Opryshko, Nicholas Rhinehart et al.

arXiv cs.LG

Coefficient Calibration as Selection Pressure in Symbolic Regression

In briefCoefficient calibration as selection pressure in symbolic regression

SummaryThis paper studies how the coefficient calibration protocol in memetic symbolic regression affects evolutionary selection. The authors propose Dirichlet-Sinkhorn Constant Averaging (DSCA), which calibrates each candidate on equally sized data partitions with different covariate distributions and evaluates it at the mean of the resulting parameters. On synthetic benchmarks and ten real-world datasets, DSCA improves functional recovery and the accuracy-complexity trade-off compared with centralized BFGS and Levenberg-Marquardt calibration.

Mattia Billa, Veronica Guidetti, Federica Mandreoli

arXiv cs.LG · cs.AI · cs.SD

CircuitTree: Composing Circuits into A Syllable Transcriber

In briefCircuitTree: Combining Small Neural Circuits into a Syllable Transcriber

SummaryThis paper presents a method for combining many small, interpretable neural subnetworks, called circuits, into a single model. It introduces a greedy, density-scaled composition algorithm and CircuitTree, a data structure built on a tree-compose schedule. Phoneme circuits pruned from HuBERT are composed into a syllable classifier, and a chained hierarchy of circuits transcribes open syllables at 64.8% accuracy. The authors report that 99.5% of circuit components are shared.

Jiankun Wei, Ewan Dunbar, Gerald Penn

arXiv cs.LG · cs.DC

Adaptive Multi-Discriminator WGAN Framework for Resource-Constrained Internet of Vehicles Using Reinforcement Learning and Game Theory

In briefAdaptive GAN framework for resource-limited connected vehicles, combining reinforcement learning and game theory

SummaryThis paper proposes an adaptive multi-discriminator Wasserstein GAN (MD-WGAN) framework for Internet of Vehicles environments with limited resources. Roadside units host generators paired with DQN agents that select discriminator subsets and manage distributed training across vehicles, while a game-theoretic step allocates training epochs between generators and discriminators. On real-world NGSIM trajectory data, the framework reaches prediction accuracy comparable to state-of-the-art GAN baselines (RMSE 1.029, MAE 0.894) and reduces average CPU utilization by about 28% and memory usage by about 6%.

Farhoud Jafari Kaleibar, Amr M. Zaki, Marin Litoiu

arXiv cs.AR · cs.AI · cs.PF

The Missing Fourth Term for the Emulation Tensor Memory Equilibrium (TME) Model: The Residue Deconstruction Cost

In briefPaper adding a missing fourth cost term to the emulation tensor-memory model

SummaryThis paper points out that the Tensor-Memory Equilibrium model for Ozaki Scheme II fp64 emulation omits the cost of scaling, rounding, and reducing each streamed input operand modulo several moduli. The authors add this fourth term, calibrate it against the cuBLAS emulation path, and derive an operational-intensity threshold below which emulation cannot match native fp64. They report that on the NVIDIA B300, memory-bound kernels such as GEMV and SpMV reach only 0.3–0.9x of native performance.

Harun Bayraktar, John Gunnels, Peter Caday

arXiv cs.LG · cs.CL · cs.IR

Language Models for Page-Level Layout Decisions in E-commerce Search

In briefUsing language models to evaluate page layout choices in e-commerce search

SummaryThis paper studies whether adding a secondary product stack at a given position on an e-commerce search page benefits users. It compares three ways of using language models as offline evaluators: direct prompt-based judging, prompt-derived features, and representation-based methods. The results show that representation-based approaches consistently outperform prompt-based judging at predicting user engagement, suggesting a reliable basis for offline layout evaluation.

Varun Joshi, Eva C. Song, ChengXiang Zhai

arXiv cs.DB · cs.LG

Implementation Guidelines for Data Quality Metrics

In briefExecutable Implementation Guidelines for ISO Data Quality Metrics

SummaryThe ISO/IEC 25024 and ISO/IEC 5259 standards define data quality metrics but leave open how to implement them, so they are rarely used. The paper classifies the data-level metrics into generalizable, parameterized (learned from clean reference data or set by experts), and non-generalizable types, and gives implementation guidelines for the automatable ones. The authors release dqmeasure, an open-source library of 20 metrics, and experiments show scores decrease monotonically as injected errors increase, along with downstream ML performance.

Philipp Jung, Katinka Becker, Felix Biessmann et al.

arXiv cs.CL

Large Language Models for Machine Translation Quality Annotation: Humans and Models Are Both Challenged

In briefLarge Language Models for Machine Translation Quality Annotation: Both Humans and Models Face Challenges

SummaryThis paper evaluates how well large language models agree with human annotators when rating machine translation quality using the MQM and ESA schemes. It uses a long-context test set of 70 language pairs and public WMT23 and WMT25 data. The models sometimes agree with humans more than humans agree with each other, but agreement varies widely by scheme, language pair and domain, and is unreliable in most settings.

Hala Almaghout, Christian Federmann, Qin Gao

arXiv q-bio.GN · cs.AI · cs.SE Code

RADAgent: Automating RADseq Pipelines with Private Open-Source LLMs

In briefRADAgent: A Private Open-Source LLM System for Automating RADseq Genomic Analysis Pipelines

SummaryRADseq is a low-cost reduced-representation sequencing method that uses restriction enzymes to sample parts of the genome, widely used in population genomics, but full analysis requires expert coordination across many tools. This paper presents RADAgent, which splits the RADseq workflow into 16 independently executable and verifiable agent modules driven by an open-weight large language model. Evaluated on a real dataset of 476 samples from 19 populations, it reliably automated the complete workflow while keeping genomic data and model execution in the local computing environment.

Qiming Guo, Malaka Sudhakara Bava Sukruth Reddy, Honggang Zhao et al.

arXiv cs.RO · cs.CV · cs.LG

When Listening Becomes Easier: Scrubbing Visual Cues for Shortcut-Free VLAs

In briefWhen Listening Becomes Easier: Removing Visual Shortcuts for Robust VLA Models

SummaryThis paper studies shortcut learning in robot learning, where limited demonstration diversity leads policies to rely on irrelevant visual cues such as viewpoint or background. The authors find that different vision-language backbones vary widely in susceptibility, and propose a rollout-free representation metric called action margin that correlates with this behavior. They introduce task scrubbing, a domain-adversarial training method that reduces reliance on visual shortcuts, and report improved out-of-distribution robustness in simulation and real-world experiments.

Jasper Gerigk, Kenzo Aspuru-Takata, Chin-Hsuan Wu et al.

arXiv cs.AI · cs.MA

Reading the Room: Foundations, Design, and Challenges of Normative Competence in LLMs

In briefReading the Room: Testing whether LLMs can learn the unwritten rules a community enforces

SummaryThis paper studies whether large language models can infer the norms a community actually enforces from interaction alone, without relying on pretrained knowledge. The authors built a multi-agent debate setting where access to debate is governed by synthetic norms, and tested several architectural modules for norm inference. They find that baseline agents fail to learn norms even when doing so would help, norm-following varies with norm style and model, and agents indiscriminately copy idiosyncratic behaviors alongside true rules.

Andrea Wynn, Harsh Satija, Nathan Baek et al.

arXiv cs.LG

How Hackable Is Your Speech Quality Metric? A Corrected Protocol, a Benchmark, and What Patching Buys

In briefHow easily can speech quality metrics be fooled? A corrected evaluation protocol, benchmark, and patching results

SummaryThis paper examines whether speech quality predictors used as rewards can be manipulated by adversarial perturbations. The authors identify two flaws in current measurement: a neural codec in the processing chain shifts scores on its own, so the unperturbed round trip should be the reference, and a single trained attacker is just one sample, so the worst case over several attackers is needed. Under this protocol, NISQA, SSL-MOS, DNSMOS and UTMOS are hacked on 90%, 21%, 14% and 6% of utterances. The authors also audit an attack-detect-patch loop, finding its hardening is limited to its own attack space and costs system correlation out of domain.

Ali Alavi, Donald S. Williamson

arXiv cs.LG · physics.comp-ph · physics.flu-dyn

Gen-PINNs: Generative Adversarial Physics Informed Neural Networks for solving partial differential equations

In briefGen-PINNs: Generative adversarial neural networks that use physics rules to solve hard equations without data

SummaryPhysics-Informed Neural Networks (PINNs) are a common data-free way to solve partial differential equations with machine learning. This paper identifies weaknesses of standard PINNs and proposes Gen-PINNs, a deterministic residual-adversarial framework aimed at equations with sharp or shock-front behavior. Tests on the Burgers, Allen-Cahn, and Kuramoto-Sivashinsky equations against standard PINNs report improved accuracy and convergence.

Muhammad M. Akmal, Kamy Sepehrnoori, Michael J. Pyrcz