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Author

Jun-Ran Wang

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#artificial intelligence Preprint Sep 2026

Transformers Stop Thinking Too Early, and a Tiny LoRA Fixes It

Pretrained transformers use little of their depth to follow references in context. Thirteen base models reliably follow only 1.4-3.6 lines, and extra pretrained loops add little. A task-trained rank-8 LoRA at one early layer extends this computation with all model weights frozen. Qwen3-8B improves from 15.5% to 99% exa...

Ze-Hao Jin, Rui-Xuan Deng, Jun-Ran Wang · 0 citations
#artificial intelligence Preprint Sep 2026

SEAD: A State-Based Perspective on Attack and Defense in Tool-Using Agents

Language-model agents increasingly use tools to act on external systems. Earlier actions can alter files, permissions, database records, or other state, making a later routine-looking action harmful. Yet the visible interaction may not reveal the underlying state needed to assess that action. We formulate attack and de...

Xin-Jie Shen, Jun-Ran Wang, Rong-Zhe Wei et al. · 0 citations
#artificial intelligence Preprint Sep 2026

AcFlow: Controlling Text-to-Image Diffusion Transformers via Learned Conditional Activation Flow

AcFlow is introduced, an inference-time controller that transports intermediate layer image-token activations through a learned concept-conditioned velocity field while keeping the base DiT frozen, and supports the learned velocity field as an adaptive control mechanism.

Jun-Ran Wang, Ze-Hao Jin, Tian-Yu Luan et al. · 0 citations

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