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Zhaohui Geoffrey Wang

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#machine learning Preprint Oct 2026

When Rank Rises as LLMs Degrade

It is shown that direction is a property of the regime-statistic pair and cannot be fixed by recalibration alone, and two often-conflated statistics: RankMe normalises singular values, whereas covariance effective rank normalises eigenvalues.

Zhaohui Geoffrey Wang · 0 citations