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Qinbo Zhang

3 accepted papers

2026

Stealing Split Learning Bottom Models by Recovering Embedding Geometry

CVPR 2026

Vertical federated learning (VFL) trains models by splitting computation across clients and a server that only exchange intermediate embeddings. Recent work shows that a server even if honest-but-curious can steal a client's bottom model by querying the system and regressing on the returned embeddin

Cited by 0SourceScholar
2025

HaCore: Efficient Coreset Construction with Locality Sensitive Hashing for Vertical Federated Learning

AAAI 2025technical

Vertical federated learning (VFL) trains model when the features of data samples are scattered over multiple clients. To improve efficiency, a promising approach is to find a coreset of the data samples and use it as a smaller training set. However, existing methods produce a large coreset when ther…

Cited by 0SourcePDFScholar
2025

Model Rake: A Defense Against Stealing Attacks in Split Learning

IJCAI 2025

Split learning is a prominent framework for vertical federated learning, where multiple clients collaborate with a central server for model training by exchanging intermediate embeddings. Recently, it is shown that an adversarial server can exploit the intermediate embeddings to train surrogate mode

Cited by 0SourcePDFScholar