Tensor rank bounds and explicit QTT representations for the inverses of circulant matrices.
Lev I. VysotskyMaxim V. RakhubaPublished in: Numer. Linear Algebra Appl. (2023)
Keyphrases
- frobenius norm
- kullback leibler divergence
- low rank
- projection matrices
- matrix completion
- lower bound
- sufficient conditions
- singular values
- singular value decomposition
- upper bound
- least squares
- error bounds
- upper and lower bounds
- singular vectors
- high order
- low rank approximation
- fourier transform
- symmetric positive definite
- order tensor
- higher order tensors
- lower and upper bounds
- tensor factorization
- tensor decomposition
- higher order
- worst case
- data representation
- discrete fourier transform