arXiv Machine Learning
Oct 19

Ori: Drift-Aware Streaming $k$-PCA for Very Low-Rank LLM Training

arXiv:2610. 22794v1 Announce Type: new Abstract: A prominent family of low-rank LLM optimizers, pioneered by GaLore, performs gradient-subspace projection: at each step, they project the gradient into a low-dimensional subspace and map the update back to the full model.

By Xinyu Luo, Jincheng Zhou, Mengbo Wang, Zilin Shen, Nadia Atallah Lanman, Petros Drineas, Bruno Ribeiro, Brian Bullins