This set of Matlab codes reproduce the figures and experimental results published in our paper:
Subgradient Descent Learns Orthogonal Dictionaries.
Yu Bai, Qijia Jiang, Ju Sun. https://arxiv.org/abs/1810.10702.
- The M files subgrad_ident.m and subgrad_ortho.m: implement the Riemannian subgradient descent algorithm and reproduce Figure 1.
- The M file solver_granso.m: implement the nonsmooth BFGS method based on the GRANSO package (version 1.6).
Codes written by Qijia Jiang and Ju Sun. Questions or bug reports please send email to Ju Sun, sunjunus@gmail.com
Thanks to bug reporters: