Issue 2026-09-19 ยท Voices
Sebastian Raschka @rasbt
Interesting new insights into the old AdamW vs Muon debate: Muon seems to do better because it reduces memorization. [ๅผ็จ @CalcCon]: ๐๐ฑ๐ฎ๐บ๐ช ๐๐. ๐ ๐๐ผ๐ป: ฮฑ, ๐ข๐๐ฒ๐ฟ๐ณ๐ถ๐๐๐ถ๐ป๐ด, ๐ฎ๐ป๐ฑ ๐ ๐ฒ๐บ๐ผ๐ฟ๐ถ๐๐ฎ๐๐ถ๐ผ๐ป. A quick update on our WeightWatcher experiments comparing AdamW with the newer Muon optimizer. We trained a single-head nanoGPT model with both optimizers across five seeds. We then used WeightWatcher to study the weight-matrix spectra and several forms of memorization. The top plot shows the average raw ฮฑ.โฆ
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