AI article
They Put 7 Attention Mechanisms on a Latin Square. Then Removed Them One by One.
Community description: A 6.59B MoE with seven sequence mixers across 49 layers, and a parameter-matched ablation with eight seeds per arm. Placement changed loss by 0.16%. Removing three of four mechanisms changed nothing. Removing the fourth cost 2.14%.
Dev.to | Sep 18, 2026 | ai maya
Automated excerpt
Since GPT, nearly every Transformer repeats the same attention mechanism at every layer. Put seven mechanisms on a 7×7 square and read it out across 49 layers, and every mechanism is guaranteed to be spread evenly through depth. layer 0.. 6 A B C D E F G layer 7.. 13 B C D E F G A layer 14.. 20 C D E F G A B No mechanism can cluster. Paper: arXiv:2609.
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