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Jaerin Lee

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#machine learning Preprint Aug 2026

The Road Taken: The Role of Optimizers at the Edge of Stability

This work derives the edge of stability threshold from the directional Hessian and the gradient-alignment score with respect to the actual update taken by the optimizer, rather than the maximum curvature mode.

Jaerin Lee, Kyoung Mu Lee · 1 citation
#machine learning Preprint Sep 2026

A Journey to the Edge of Stability

It has recently been found that deep learning often occurs at the"edge of stability (EoS),"where the maximum Hessian eigenvalue of the model is stabilized at a value reciprocal to the learning rate. However, what happens before we reach that regime? We fix a deep learning problem and vary first order optimization metho...

Jaerin Lee, Kyoung Mu Lee · 0 citations

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