collaborators

11 papers

cs.CR2026

Selective Disclosure Watermarking for Large Language Models

Xuyang Chen, Xiang Li, Yangxinyu Xie +1

Watermarking methods embed imperceptible and verifiable signals into text generated by large language models (LLMs). Existing approaches include zero-bit schemes for distinguishing…

cs.CR2026

Robust Spectral Watermark for Synthetic Tabular Data

Yizhou Zhao, Xiang Li, Peter Song +2

The rise of generative AI has enabled the production of high-fidelity synthetic tabular data across fields such as healthcare, finance, and public policy, raising growing concerns…

cs.LG2026

Improving the Trade-off Between Watermark Strength and Speculative Sampling Efficiency for Language Models

Weiqing He, Xiang Li, Li Shen +2

Watermarking is a principled approach for tracing the provenance of large language model (LLM) outputs, but its deployment in practice is hindered by inference inefficiency. Specul…

cs.LG2026

On the Empirical Power of Goodness-of-Fit Tests in Watermark Detection

Weiqing He, Xiang Li, Tianqi Shang +3

Large language models (LLMs) raise concerns about content authenticity and integrity because they can generate human-like text at scale. Text watermarks, which embed detectable sta…

math.ST2025

Optimal Detection for Language Watermarks with Pseudorandom Collision

T. Tony Cai, Xiang Li, Qi Long +2

Text watermarking plays a crucial role in ensuring the traceability and accountability of large language model (LLM) outputs and mitigating misuse. While promising, most existing m…

cs.LG2025

Mitigating Privacy-Utility Trade-off in Decentralized Federated Learning via -Differential Privacy

Xiang Li, Buxin Su, Chendi Wang +2

Differentially private (DP) decentralized Federated Learning (FL) allows local users to collaborate without sharing their data with a central server. However, accurately quantifyin…