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Hao-Cheng Jiang

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#artificial intelligence Preprint Aug 2026

FISGuard: Defending Against Membership Inference via Fixed Input Subspaces

FISGuard reduces the ProjRes attack AUC to near the random-guessing level of 0.5 in most settings, while maintaining downstream task performance close to that of the undefended model and introducing only limited computational overhead, thereby achieving a favorable privacy--utility trade-off.

Hao-Cheng Jiang, Hua Shen · 0 citations