ResearchBenchmarksMembership Inference Attack on XSum (AUC and TPR@1% FPR variants)Membership Inference Attack on XSum (AUC and TPR@1% FPR variants)Follow0.742AUC (LOSS)GPT-20.571440.615720.660.70428Jan 17, 2026Evaluation resultsMethodMethodLinksAUC (LOSS)AUC (Zlib)AUC (MK++)AUC (RefL)AUC (SPV)AUC (EZ-MIA)TPR@1% FPR (LOSS)TPR@1% FPR (Zlib)TPR@1% FPR (MK++)TPR@1% FPR (RefL)TPR@1% FPR (SPV)TPR@1% FPR (EZ-MIA)GPT-2Fine-tuning method=Ful...Fine-tuning method=Full fine-tuning2026.010.7420.7430.6820.9610.9270.9935.55.64.214.731.482.6Llama-2Fine-tuning method=LoRAFine-tuning method=LoRA2026.010.5790.5760.5530.7990.7560.841.91.91.55.55.317.6GPT-JFine-tuning method=LoRAFine-tuning method=LoRA2026.010.5780.5770.5510.7870.7610.861.821.56.25.619.7