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Gongxi Zhu

4 accepted papers

2026

FedGRPO: Privately Optimizing Foundation Models with Group-Relative Rewards from Domain Clients

AAAI 2026technical

One important direction of Federated Foundation Models (FedFMs) is leveraging data from small client models to enhance the performance of a large server‑side foundation model. Existing methods based on model level or representation level knowledge transfer either require expensive local training or

Cited by 0SourcePDFScholar
2026

PrivSynth: Alternating and Control-Based Optimization for Privacy and Utility in Synthetic Data

CVPR 2026

As publicly available data dwindles, synthetic data generation (SDG) has become a practical solution for privacy-preserving data sharing. By training generative models on private data, SDG creates samples that retain task-relevant features while obfuscating sensitive content. However, recent work sh

Cited by 0SourceScholar
2025

FedMIA: An Effective Membership Inference Attack Exploiting "All for One" Principle in Federated Learning

CVPR 2025poster

Federated Learning (FL) is a promising approach for training machine learning models on decentralized data while preserving privacy. However, privacy risks, particularly Membership Inference Attacks (MIAs), which aim to determine whether a specific data point belongs to a target client's training se…

2024

Unlearning during Learning: An Efficient Federated Machine Unlearning Method

IJCAI 2024poster

In recent years, Federated Learning (FL) has garnered significant attention as a distributed machine learning paradigm. To facilitate the implementation of the "right to be forgotten," the concept of federated machine unlearning (FMU) has also emerged. However, current FMU approaches often involve a…