Author

Yuanjian Xu

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#natural language process... Review Oct 2026

Data Strategies for Large Language Models: A Unified Perspective on the Training Lifecycle

Data strategy plays a central role in training large language models (LLMs). It governs the selection, weighting, and scheduling of training data, thereby determining the capabilities a model can acquire from a fixed data budget. We treat high-quality data as having high training-dependent utility, which depends on the...

Yuan-Jian Xu, Jia-Ning Hao, Tian-Ze Sun et al. · 0 citations

#artificial intelligence Preprint Oct 2026

AgentPerturb: Evaluating LLM Agent Robustness under Controlled Interaction Perturbations

Real-world tasks are often complex and noisy, posing substantial challenges for LLM agents. Yet existing evaluations lack a systematic framework for jointly characterizing potential perturbation targets and types. We use this two-dimensional view to conduct a unified study that quantifies the robustness of current fron...

Yuan-Jian Xu, Jin-Yi Han, Jia-Ning Hao et al. · 0 citations

Preprint Aug 2026

Skill-Use: Can LLMs Actually Use Skills in Agentic Harnesses?

Skill-Use is introduced, a benchmark that evaluates skill use under progressive disclosure, where an agent sees only a skill's name and short description and must retrieve the full procedure before following it.

Jinyi Han, Yuanjian Xu, Ying Liao et al. · 4 citations · ⚡2