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Geometry and Dynamics of LayerNorm
May 8, 2024, 4:42 a.m. | Paul M. Riechers
cs.LG updates on arXiv.org arxiv.org
Abstract: A technical note aiming to offer deeper intuition for the LayerNorm function common in deep neural networks. LayerNorm is defined relative to a distinguished 'neural' basis, but it does more than just normalize the corresponding vector elements. Rather, it implements a composition -- of linear projection, nonlinear scaling, and then affine transformation -- on input activation vectors. We develop both a new mathematical expression and geometric intuition, to make the net effect more transparent. We …
abstract arxiv cs.lg dynamics function geometry intuition linear networks neural networks projection scaling technical type vector
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