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Cross-family weak-to-weak spoofing on MET Qwen2-1.5B to Gemma-2B

93.3ASROriginal (target)
-3.73221.45946.6571.841Jun 15, 2026

Evaluation results

MethodLinks
Original (target)Source Model=Qwen2-1.5B, Target Model=Gemma-2B2026.0693.3
GhostPrintSource Model=Qwen2-1.5B, Target Model=Gemma-2B2026.0620
Query DetectionSource Model=Qwen2-1.5B, Target Model=Gemma-2B2026.066.7
Token SuppressionSource Model=Qwen2-1.5B, Target Model=Gemma-2B2026.063.3
Original (weak)Source Model=Qwen2-1.5B, Target Model=Gemma-2B2026.060
RewritingSource Model=Qwen2-1.5B, Target Model=Gemma-2B2026.060
5-shot ICLSource Model=Qwen2-1.5B, Target Model=Gemma-2B2026.060