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Abstractive Summarization on XSum (Accept Rate, ROUGE-2)

8.79ROUGE-2SpecCascade
7.8028.05858.3158.5715Apr 8, 2026

Evaluation results

MethodLinks
SpecCascadeTarget Model=Gemma-3-12B, Draft Model=Gemma-3-4B, Temperature=0.1, Draft Length (N)=52026.048.7939.42
SD (Lossy)Target Model=Gemma-3-12B, Draft Model=Gemma-3-4B, Temperature=0.1, Draft Length (N)=52026.048.3740.08
Static EnsembleTarget Model=Gemma-3-12B, Draft Model=Gemma-3-4B, Temperature=0.1, Draft Length (N)=52026.048.3162.65
AutoregressiveTarget Model=Gemma-3-12B, Draft Model=Gemma-3-4B, Temperature=0.1, Draft Length (N)=52026.048.27—
SDTarget Model=Gemma-3-12B, Draft Model=Gemma-3-4B, Temperature=0.1, Draft Length (N)=52026.048.2739.63
DiversedTarget Model=Gemma-3-12B, Draft Model=Gemma-3-4B, Temperature=0.1, Draft Length (N)=52026.047.8471.22