Sparse Spectral Approximations of High-Dimensional Problems Based on Hyperbolic Cross.
Jie ShenLi-lian WangPublished in: SIAM J. Numer. Anal. (2010)
Keyphrases
- high dimensional problems
- high dimensional
- dimension reduction
- sparse data
- low dimensional
- partial differential equations
- dimensionality reduction
- random projections
- image processing
- nearest neighbor
- sparse representation
- sparse approximations
- spectral analysis
- high dimensionality
- data points
- closed form
- k nearest neighbor
- feature space
- preprocessing
- spectral features
- conservation laws
- neural network