Unverified50% confidenceFactExact time
相对位置编码（如 RoPE、ALiBi）会对距离较远的 token 对施加注意力衰减偏置，序列边界位置拥有更多邻近token的注意力积累优势
1
Sources
50%
Confidence
Long-term
Relevance
7/24/2026
First Seen
Sources
Related Claims
UnverifiedALiBi 不引入显式位置编码，而是在注意力分数上叠加与相对距离成线性比例的负偏置项77% similarUnverified注意力层作为信息路由器在不同序列位置间聚合上下文，其键值是从提示中其他token动态派生的短期记忆表示72% similarUnverifiedUltra-large context windows are typically implemented relying on sparse attention mechanisms, RoPE positional encoding extrapolation, and hierarchical caching technology.69% similarUnverifiedRing Attention, sparse activation architectures based on MoE, and improved positional encoding schemes are key technologies for achieving ultra-long context.68% similarUnverified上下文窗口扩展得益于ALiBi位置编码、RoPE的外推扩展、Flash Attention和Ring Attention等技术突破68% similar
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