Author

Xiaoyu Li

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Preprint Aug 2026

Beyond Sparse Weights: When Is Attention Compressible?

Results motivate CertKV, a training-free compressor that reserves one tail-summary slot per head and allocates the rest by value dispersion, which is top-two in seven of nine LongBench-v2 settings, remains in the leading compressed tier on 128K RULER, and realizes a ten-fold cache budget in a packed Llama prototype.

Chiwun Yang, Xiaoyu Li · 0 citations