Euclidean gradient uniqueness under Σ dependency
YouJiacheng · x · 2026-08-31
Discussion on the uniqueness of Euclidean gradient when requiring linear dependency on Σ. Notes that PSGD's original objective with QEQ update yields the exact same update rule as KL+AIRM.
Related event: PSGD Objective Found Mathematically Equivalent to KL-Shampoo(6 posts)→
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