Qing Qu

activity

20142023

most citedComplete Dictionary Recovery over the Sphere I: Overview and the Geometric Picture

242 citations · 1.1k across the 27 of their papers we have counts for

collaborators

Showing 2014Show all

2 papers · 1 filter

cs.IT2014★ 50 cited

Finding a sparse vector in a subspace: Linear sparsity using alternating directions

Qing Qu, Ju Sun, John Wright

Is it possible to find the sparsest vector (direction) in a generic subspace $S \subseteq R^{p}$ with $dim (S) = n < p$ ? This problem can be consi…

cs.CV2014★ 125 cited

Structured Priors for Sparse-Representation-Based Hyperspectral Image Classification

Xiaoxia Sun, Qing Qu, Nasser M. Nasrabadi +1

Pixel-wise classification, where each pixel is assigned to a predefined class, is one of the most important procedures in hyperspectral image (HSI) analysis. By representing a test…