306 citations · 1.5k across the 30 of their papers we have counts for
4 papers · 1 filter
Complete Dictionary Recovery over the Sphere II: Recovery by Riemannian Trust-region Method
Ju Sun, Qing Qu, John Wright
We consider the problem of recovering a complete (i.e., square and invertible) matrix , from with $\mathbf Y = \mathbf A_0 \mat…
When Are Nonconvex Problems Not Scary?
Ju Sun, Qing Qu, John Wright
In this note, we focus on smooth nonconvex optimization problems that obey: (1) all local minimizers are also global; and (2) around any saddle point or local maximizer, the object…
Complete Dictionary Recovery over the Sphere
Ju Sun, Qing Qu, John Wright
We consider the problem of recovering a complete (i.e., square and invertible) matrix , from with $\mathbf Y = \mathbf A_0 \math…
A Batchwise Monotone Algorithm for Dictionary Learning
Huan Wang, John Wright, Daniel Spielman
We propose a batchwise monotone algorithm for dictionary learning. Unlike the state-of-the-art dictionary learning algorithms which impose sparsity constraints on a sample-by-sampl…