Time-varying spectral matrix estimation via intrinsic wavelet regression for surfaces of Hermitian positive definite matrices.
Joris ChauRainer von SachsPublished in: Comput. Stat. Data Anal. (2022)
Keyphrases
- positive definite
- semi parametric
- singular values
- regression model
- geometric structure
- multiscale
- singular value decomposition
- denoising
- regression problems
- natural images
- model selection
- covariance matrix
- dimensionality reduction
- linear regression
- mutual information
- image patches
- gaussian processes
- least squares
- support vector
- face recognition