Author

Jiachen Lei

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Preprint Oct 2026

Budgeted Attack Scheduling for LLM Red-Teaming: The Roles of Static Priors, Semantic Guidance, and Online Feedback

As jailbreak attacks against large language models (LLMs) become increasingly diverse, red-teaming has come to rely on large libraries of jailbreak prompts and attack strategies to evaluate the robustness of victim models and their defense settings. However, attack effectiveness is highly condition-dependent: an attack...

Zhi-Cheng Fang, Han Sun, Jia-Chen Lei et al. · 0 citations

Preprint Aug 2026

FADE: From Passive Verification to Active Discovery in Counterfactual Video Understanding

This paper presents FADE, an effective training framework for counterfactual discovery and explanation that is built on an evidence-first, two-stage training paradigm, and demonstrates remarkable robustness when transitioning from constrained MCQs to unconstrained OQA and captioning.

Fufangchen Zhao, Jin-Hu Fu, Jiachen Lei et al. · 0 citations

Preprint Aug 2026

DreamX-Creator: Democratizing Native Audio-Video Generation at 2K Resolution

By releasing the compact 7B generator and 2K Refiner, this work seeks to democratize native audio-video generation and provide an accessible foundation for future research in unified audio-video generative modeling.

Jia-Shu Zhu, Yan-Hao Zheng, Rui Tian et al. · 0 citations