HIT Shenzhen unveils STILL: content-aware intra-layer hybrid attention to linearize LLMs

jiqizhixin · x · 2026-10-26

Softmax attention's quadratic cost blocks long context, and training a large linear model from scratch costs tens of thousands of GPU-hours. The cheaper path is linearizing a pretrained LLM in place, but existing intra-layer hybrid methods either route tokens by position with brute sliding windows (locking distant key evidence out of high-quality attention) or destroy the pretrained norm structure in feature mapping, collapsing long-context ability.

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