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Toward a First-Principles Update Geometry for the Language-Model Head

Somasundaram, Aditya et al.
arXiv (All) · Papers
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Muon motivates designing optimizer geometry around the function of each parameter block and uses the spectral norm for hidden linear layers. For the language-model head, the spectral norm is not a faithful measure of functional change. Softmax removes shared logit shifts, whereas the spectral norm c
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