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Chenhao Sun

3 accepted papers

2026

PrivSV: Differentially Private Steering Vector for Large Language Models

AAAI 2026technical

Steering Vector (SV) is a powerful technique for controlling Large Language Models (LLMs) by manipulating their activations without altering model weights. However, when constructed from sensitive data, SV poses significant privacy risks, as it may leak private information. Existing differential pri

Cited by 0SourcePDFScholar
2025

Average Certified Radius is a Poor Metric for Randomized Smoothing

ICML 2025poster

Randomized smoothing (RS) is popular for providing certified robustness guarantees against adversarial attacks. The average certified radius (ACR) has emerged as a widely used metric for tracking progress in RS. However, in this work, for the first time we show that ACR is a poor metric for evaluati…

Cited by 1SourcePDFScholar