Preserving Positive Definiteness in Hierarchically Semiseparable Matrix Approximations.
Xin XingEdmond ChowPublished in: SIAM J. Matrix Anal. Appl. (2018)
Keyphrases
- positive definite
- positive and negative
- covariance matrix
- efficient computation
- data sets
- matrix representation
- positive feedback
- image details
- approximation methods
- singular values
- linear algebra
- similarity matrix
- singular value decomposition
- hierarchical structure
- kernel function
- image segmentation
- information retrieval