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Shao-Hua Sun

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#artificial intelligence Preprint May 2026

PRISM: A Geometric Risk Bound for Decomposing Drift into Scale, Shape, and Head

PRISM, a closed-form upper bound on the cross-entropy risk gap between a target model and a proxy variant, is derived and it is proved that it splits exactly into three measurable axes: scale, shape, and head.

Chieh-Yen Lin, Shao-Hua Sun · 0 citations