Unverified50% confidenceBenchmarkExact time
当相关文档被放置在上下文中间位置时，模型正确回答率相比放在首尾位置下降高达20-30个百分点
1
Sources
50%
Confidence
Long-term
Relevance
7/20/2026
First Seen
Sources
Related Claims
Unverified实验显示模型对序列首尾信息的召回率比中间位置高出20%～40%77% similarUnverifiedResearch shows that approximately 15–25% of papers experience score changes after rebuttal, with positive changes slightly outnumbering negative ones73% similarUnverified在某些测试中，文档中间段信息的检索准确率比首尾段低40%以上71% similarUnverified研究表明在超过8-10轮对话后，模型对初始系统提示中规则的遵循率可下降20%-40%70% similarUnverifiedStanford University's 2023 "Lost in the Middle" study (Liu et al.) showed that when key information is located in the middle section of the context, the model's retrieval accuracy drops approximately 20–30 percentage points compared to the head and tail, and this is especially significant when the context exceeds 32K tokens.70% similar
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