Author

B. B. Zhu

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Preprint Aug 2026

Targeted Counterfactual Fingerprinting for Black-Box LLM Ownership Verification

TCF (Targeted Counterfactual Fingerprinting), a black-box LLM fingerprinting framework that converts open-ended generation comparison into constrained-answer targeted counterfactual transfer, and introduces the source-model counterfactual margin (SCM), a protected-model-only quantity that certifies the target is unlike...

Yu-Tong Wu, Xiao-Fan Bai, Shixin Li et al. · 1 citation

2026

DP2-RAG: An Efficient Full-Process Differential Privacy Implementation in Retrieval-Augmented Generation

As Retrieval-Augmented Generation (RAG) brings Large Language Models (LLMs) into contact with proprietary and user-specific knowledge bases in sensitive domains, protecting the privacy of both queries and knowledge content becomes a critical requirement. The RAG pipeline, however, exposes sensitive information at two d...

Yuxuan Cai, Chao-Xiang He, Hong-Sheng Hu et al. · IEEE Transactions on Informa... · 0 citations