activity
20242026
collaborators

5 papers

cs.CL2026

Few Tokens, Big Leverage: Preserving Safety Alignment by Constraining Safety Tokens during Fine-tuning

Guoli Wang, Haonan Shi, Tu Ouyang +1

Large language models (LLMs) often require fine-tuning (FT) to perform well on downstream tasks, but FT can induce safety-alignment drift even when the training dataset contains on…

cs.CR2025

EASE: Practical and Efficient Safety Alignment for Small Language Models

Haonan Shi, Guoli Wang, Tu Ouyang +1

Small language models (SLMs) are increasingly deployed on edge devices, making their safety alignment crucial yet challenging. Current shallow alignment methods that rely on direct…

cs.CR2025

Unveiling Client Privacy Leakage from Public Dataset Usage in Federated Distillation

Haonan Shi, Tu Ouyang, An Wang

Federated Distillation (FD) has emerged as a popular federated training framework, enabling clients to collaboratively train models without sharing private data. Public Dataset-Ass…

cs.LG2025

Navigating the Designs of Privacy-Preserving Fine-tuning for Large Language Models

Haonan Shi, Tu Ouyang, An Wang

Instruction tuning has proven effective in enhancing Large Language Models' (LLMs) performance on downstream tasks. However, real-world fine-tuning faces inherent conflicts between…

cs.CR2024

Learning-Based Difficulty Calibration for Enhanced Membership Inference Attacks

Haonan Shi, Tu Ouyang, An Wang

Machine learning models, in particular deep neural networks, are currently an integral part of various applications, from healthcare to finance. However, using sensitive data to tr…