Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Multi-Way Compressed Sensing for Sparse Low-Rank Tensors
 
research article

Multi-Way Compressed Sensing for Sparse Low-Rank Tensors

Sidiropoulos, Nicholas D.
•
Kyrillidis, Anastasios  
2012
IEEE Signal Processing Letters

For linear models, compressed sensing theory and methods enable recovery of sparse signals of interest from few measurements-in the order of the number of nonzero entries as opposed to the length of the signal of interest. Results of similar flavor have more recently emerged for bilinear models, but no results are available for multilinear models of tensor data. In this contribution, we consider compressed sensing for sparse and low-rank tensors. More specifically, we consider low-rank tensors synthesized as sums of outer products of sparse loading vectors, and a special class of linear dimensionality-reducing transformations that reduce each mode individually. We prove interesting "oracle" properties showing that it is possible to identify the uncompressed sparse loadings directly from the compressed tensor data. The proofs naturally suggest a two-step recovery process: fitting a low-rank model in compressed domain, followed by per-mode l(0)/l(1) decompression. This two-step process is also appealing from a computational complexity and memory capacity point of view, especially for big tensor datasets.

  • Files
  • Details
  • Metrics
Loading...
Thumbnail Image
Name

06290342.pdf

Access type

openaccess

Size

1.05 MB

Format

Adobe PDF

Checksum (MD5)

da80cab024527bde2559c7332ba818ac

Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés