Do Algorithms and Barriers for Sparse Principal Component Analysis Extend to Other Structured Settings? - Wang, Guanyi; Lou, Mengqi; Pananjady, Ashwin (IEEE transactions on signal processing, 2024)
Keywords: Algorithms; computational hardness; Computational modeling; Estimation; Indexes; Iterative methods; nonconvex iterative optimization; Principal component analysis; Principal components analysis; Signal processing algorithms; structured sparsity; Vectors