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I. Tsang

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#artificial intelligence Preprint Oct 2026

Judged Useless, Queried Anyway: Tool-Using Agents Rarely Turn Their Own Evidence Judgments into Stopping Decisions

An agent whose tool keeps returning nothing useful should stop relying on it. In a retrieval environment with controlled source failures, we separate how agents judge results from what they do. We compare stopping at the same step after longer and shorter runs of results the agent judged useless; this contrast is zero...

Chubin Zhang, Zheng-Lin Wan, Xing-Rui Yu et al. · 0 citations
Book Open access Aug 2026

Geometry-Aware OOD Generalization for Composite Materials

Machine learning methods have recently shown promise in predicting composite material properties more efficiently than traditional finite element simulations. However, in real-world applications of composite materials, variations in filler characteristics or processing conditions can cause a significant mismatch betwee...

A. Bhattacharya, Hang-Wei Qian, Sylvain G. Cloutier et al. · 0 citations
#artificial intelligence Preprint Jan 2026

Denoising Time Matters:Diverse Generation in Diffusion Language Models

Time-Annealed Perturbation Sampling (TAPS) is proposed, a training-free inference strategy that samples nearby conditioning trajectories through time-aware, manifold-constrained perturbations, and consistently improves semantic and lexical diversity across open-ended and instruction-following generation tasks.

Jing-Xuan Wu, Zheng-Lin Wan, Xing-Rui Yu et al. · 4 citations
#artificial intelligence Preprint Sep 2026

Relative Generalization Invariance of LLM Pretraining

This work introduces Relative Generalization Invariance (RGI), the invariance of the validation-loss difference between any two tokens across models, and shows that RGI approximately holds across a wide range of optimizers and moderate architectural variations, suggesting that these choices induce an approximately unif...

Feng-Zhuo Zhang, Shu-Che Wang, Sheng-Gui Li et al. · 0 citations
#artificial intelligence Preprint Sep 2026

CUA-Sandbox: Efficient Environments for Computer-Use Agent Reinforcement Learning

CUA-Sandbox is introduced, which separates private state capsules from shared runtimes through state-scoped execution and transactional lifecycle operations, including resets and branches, while retaining the original software interfaces and task evaluators.

Xin Yan, Zheng-Bo Jiao, Jia-Qi Liu et al. · 0 citations
Book Open access Aug 2026

Ready to Sim? Inverse Parametric Building Modeling via Universal Anchor Representation for Urban Simulation

The proposed Universal Anchor Representation (UAR), a normalized hierarchical parameterization that constrains inference to bounded coordinates (t,s) \in [0,1]2 while guaranteeing structural connectivity by construction, is paired with a domain-specific language and compiler to produce executable parametric procedural...

Jaeyeon Kim, Po-Yen Lai, J. Wong et al. · 0 citations
Preprint Aug 2026

Unsupervised Adaptation of PDE Foundation Models

This work proposes an unsupervised PDE-based finetuning framework that eliminates the need for ground-truth solutions, and introduces NSLoRA, a Newton-Schulz orthogonalized variant that rebalances adaptation.

Ziye Song, Zhao Wei, Xin Yu et al. · 0 citations
#machine learning Preprint Sep 2026

Inferring Urban Mobility Interactions from Aggregated Dynamics

Using an uncertainty-aware physics-informed framework, this work infer future OD flows from area-level counts alone across twelve mobility datasets from cities in the United States and China, reaching accuracy comparable to models that take historical OD matrices as input.

Yi Wang, Jing Li, Jin-Liang Deng et al. · 0 citations
#natural language process... Preprint Aug 2026

Ripple-Pivot Search: Active Parallel Decoding for Diffusion Large Language Models

RPS is proposed, a novel training-free decoding method that seeks mid-entropy positions as promising candidate pivots (where to decode), and determines their token assignment that yields the greatest downstream benefit via lookahead evaluation (what to decode).

Yu-Shi Ye, Xu Chen, Hao-Yun Jiang et al. · 1 citation
#artificial intelligence Preprint Aug 2026

AERA: Adaptive Evidence Residual Allocation for Efficient Test-Time Reasoning

The results suggest that adaptive reasoning should estimate the future value of computation rather than equating present confidence with correctness, and introduce Adaptive Evidence Residual Allocation (AERA), a sequential controller that learns whether additional computation is likely to recover a better answer from c...

Zimin Wang, I. Tsang, Hang-Wei Qian · 0 citations

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