Morning Edition · Tuesday, June 23, 2026
Study Finds Transformers' 'Massive Activations' Are Robust, Not a Removable Artifact
A controlled residual-stream experiment argues that the giant outlier activations trained transformers develop are an architectural feature, with implications for quantization and interpretability.
A new preprint examines massive activations, the small number of hidden dimensions whose magnitude sits far above the median and which concentrate on the sequence-start token. The question the paper sets up is whether these outliers are a r…
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