collaborators

5 papers

cs.CR2026

Challenges in Enabling Private Data Valuation

Yiwei Fu, Tianhao Wang, Varun Chandrasekaran

Data valuation methods quantify how individual training examples contribute to a model's behavior, and are increasingly used for dataset curation, auditing, and emerging data marke…

cs.LG2025

Sparse Causal Discovery with Generative Intervention for Unsupervised Graph Domain Adaptation

Junyu Luo, Yuhao Tang, Yiwei Fu +6

Unsupervised Graph Domain Adaptation (UGDA) leverages labeled source domain graphs to achieve effective performance in unlabeled target domains despite distribution shifts. However…

cs.LG2025

Enhancing One-run Privacy Auditing with Quantile Regression-Based Membership Inference

Terrance Liu, Matteo Boglioni, Yiwei Fu +3

Differential privacy (DP) auditing aims to provide empirical lower bounds on the privacy guarantees of DP mechanisms like DP-SGD. While some existing techniques require many traini…

cs.LG2025

BLUR: A Benchmark for LLM Unlearning Robust to Forget-Retain Overlap

Shengyuan Hu, Neil Kale, Pratiksha Thaker +3

Machine unlearning has the potential to improve the safety of large language models (LLMs) by removing sensitive or harmful information post hoc. A key challenge in unlearning invo…

cs.LG2025

Unlearning or Obfuscating? Jogging the Memory of Unlearned LLMs via Benign Relearning

Shengyuan Hu, Yiwei Fu, Zhiwei Steven Wu +1

Machine unlearning is a promising approach to mitigate undesirable memorization of training data in ML models. However, in this work we show that existing approaches for unlearning…