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News/PRISM: A Geometric Risk Bound that Decomposes Drift into Scale, Shape, and Head
arxiv
PublishedMay 14, 2026 at 4:00 AM

PRISM: A Geometric Risk Bound that Decomposes Drift into Scale, Shape, and Head

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arXiv:2605.11608v1 Announce Type: new Abstract: Comparing post-training LLM variants, such as quantized, LoRA-adapted, and distilled models, requires a diagnostic that identifies how a variant has drifted, not only whether it has degraded. Existing similarity scores such as CKA and SVCCA can flag de

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