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3 days ago
SimHack: Predicting the onset of detectable reward hacking before RL training
arXiv:2610.28707v1 Announce Type: new Abstract: When training LLMs to code with reinforcement learning, reward hacking is often detectable but difficult to prevent, since (a) environment hardening is increasingly difficult as training environments grow more…
3 days ago
Big Claims, Small Margins: Do Reported GraphLLM Gains Survive Simple Baselines?
arXiv:2610.28714v1 Announce Type: new Abstract: LLM-based methods for node classification on text-attributed graphs (TAGs) routinely report state-of-the-art accuracy. We ask how these results compare with inexpensive baselines run on the same splits. On the…
3 days ago
STAR-XPC: Set Transformer for Estimating X-ray Transmission in Polymer Composites
arXiv:2610.28709v1 Announce Type: new Abstract: Evaluating the energy transmission ratio of an X-ray beam through a polymer composite is a challenging task in radiation shielding studies. The reference solution with Monte Carlo transport simulation…
3 days ago
Sequential sparse Gaussian process quantile regression
arXiv:2606.31284v2 Announce Type: replace Abstract: Quantile regression aims to estimate the conditional quantiles of a response variable from observed data. In a Bayesian setting, Gaussian process quantile regression provides uncertainty quantification but faces significant…
3 days ago
Offline Apprenticeship Learning for Human-Centric Environments
arXiv:2610.28716v1 Announce Type: new Abstract: Effective decision-making in human-centric environments such as Intelligent Tutoring Systems (ITSs) and clinical healthcare requires policies that are adaptive, data-efficient, and ethically deployable. Apprenticeship Learning (AL) infers policies directly…
3 days ago
Let It Be Simple: One-Step Action Generation for Vision-Language-Action Models
arXiv:2606.05737v3 Announce Type: replace-cross Abstract: One-step generation from standard diffusion or Flow-Matching training is rarely effective for text-to-image or video generation without distillation or specialized one-step objectives. We find that VLA action generation behaves…
3 days ago
Copying Under Repetition: From Prefix Matching to Position Hashing
arXiv:2610.26722v2 Announce Type: replace Abstract: Frontier LLMs can copy random text almost flawlessly, yet they often overrun or truncate long blocks of repeated characters. In repeated strings, matching local content no longer reliably identifies…
3 days ago
Certified Neural Approximation of Robust Nonlinear Model Predictive Control
arXiv:2610.29559v1 Announce Type: cross Abstract: Model predictive control is a high-performance control method, but it incurs comparatively high online computational costs across many control tasks and is challenging to realize in low-level hardware settings.…
3 days ago
Group Distributionally Robust Optimization over Decentralized Networks
arXiv:2610.29261v1 Announce Type: cross Abstract: We study group distributionally robust optimization (GDRO) over decentralized networks, where workers collaborate to learn robust models by minimizing the maximum local risk. Existing methods optimize only dual-regularized surrogates…
3 days ago
LongZero: Enhancing Long-Context Reasoning in LLMs from Zero Data
arXiv:2610.30132v1 Announce Type: cross Abstract: Reinforcement learning (RL) is an effective way to strengthen the long-context reasoning of large language models (LLMs), but it needs training data that are long, diverse, challenging, and verifiable.…
3 days ago
NeuroCodec: EEG-Guided Latent-Domain Generative Model for High-Fidelity Target Speaker Extraction
arXiv:2610.29815v1 Announce Type: cross Abstract: Driven by recent advancements in hearing assistive devices, target speaker extraction (TSE) in multi-talker environments has drawn significant attention. To address this, hearing technologies identify attention using neural signals…
3 days ago
EHRNote-ChatQA: A Benchmark for Evidence-Grounded Multi-Turn Clinical Question Answering over Longitudinal Discharge Summaries
arXiv:2606.15735v3 Announce Type: replace Abstract: Discharge summaries are crucial clinical documents containing the context of a patient's overall hospital stay, and are routinely reviewed by medical experts for patient readmission, ongoing care, and diagnostic…