Author

Xuehao Cui

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Preprint Oct 2026

RoleFlow: Self-Evolving Multi-Role Agentic Collaboration via Structural Adaptation

Large language model (LLM) based multi-agent systems often rely on predefined collaboration structures, limiting their adaptability to evolving task requirements. Although recent approaches enable dynamic orchestration, trajectory-level rewards they apply assign one outcome to each decision, ofen struggling to identify...

Yi-Rou Ge, Pan Wang, Xue-Hao Cui et al. · 0 citations

#natural language process... Preprint Sep 2026

TTMark: Pairwise Distortion-Free Watermarking Beyond Single-Token Entropy

Tandem Token WaterMark (TTMARK), a general pairwise watermarking framework that extends distortion-free watermarking from individual tokens to adjacent token pairs, and introduces a branch-isolating concatenated tandem generation algorithm that efficiently constructs the joint distribution in a single forward pass.

Rui-Bo Chen, Zheng-Mian Hu, Dong-Hang Lu et al. · 0 citations

#natural language process... Feb 2026

More Haste, Less Speed: Weaker Single-Layer Watermark Improves Distortion-Free Watermark Ensembles

This work proposes a general framework that utilizes weaker single-layer watermarks to preserve the entropy required for effective multi-layer ensembling and demonstrates that this counter-intuitive strategy mitigates signal decay and consistently outperforms strong baselines in both detectability and robustness.

Ruibo Chen, Yihan Wu, Xuehao Cui et al. · arXiv.org · 2 citations