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Conversational Search on TREC CAsT 2021

67.4MRRMSPA-CQR
45.87251.46157.0562.639Apr 8, 2026

Evaluation results

MethodLinks
MSPA-CQRBackbone=LLaMA2-7B, Zero-shot=true, Dense retrieval (ANCE)=true2026.0467.447.126.4
LLM4CSBackbone=ChatGPT-3.5, Zero-shot=true, Dense retrieval (ANCE)=true2026.0466.146.924.4
AdaCQRBackbone=T5-base, Zero-shot=true, Dense retrieval (ANCE)=true2026.0464.2—25
CHIQBackbone=LLaMA2-7B, Zero-shot=true, Dense retrieval (ANCE)=true2026.0462.946.525.2
E5-MistralBackbone=Mistral-7B, Zero-shot=true, Dense retrieval (ANCE)=true2026.0448.232.520.5
RepLLaMABackbone=LLaMA2-7B, Zero-shot=true, Dense retrieval (ANCE)=true2026.0447.432.719.6
LLM-EmbedderBackbone=LLaMA2-7B, Zero-shot=true, Dense retrieval (ANCE)=true2026.0446.831.217.3
InstructorRBackbone=ChatGPT-3.5, Zero-shot=true, Dense retrieval (ANCE)=true2026.0446.732.518.4