A block Cholesky-LU-based QR factorization for rectangular matrices.
Sabine Le BornePublished in: Numer. Linear Algebra Appl. (2023)
Keyphrases
- singular value decomposition
- kronecker product
- measurement matrix
- data matrix
- singular values
- low rank
- coefficient matrix
- least squares
- factorization method
- dimension reduction
- low rank approximation
- rows and columns
- kernel matrix
- dimensionality reduction
- sparse matrices
- tensor factorization
- gram matrix
- sparse matrix
- mobile phone
- null space
- original data
- principal component analysis
- image quality
- structure from motion
- optical flow
- qr decomposition