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News/Bag of Dims: Training-Free Mechanistic Interpretability via Dimension-Level Sign Patterns
arxiv
PublishedJune 18, 2026 at 4:00 AM
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Bag of Dims: Training-Free Mechanistic Interpretability via Dimension-Level Sign Patterns

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arXiv:2606.12629v2 Announce Type: replace-cross Abstract: We show the standard basis of transformer hidden states already provides a training-free, architecture-general feature basis. Individual dimensions encode semantic content via their signs (+/-1) and confidence via their magnitudes, acting as

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