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Online CPDL

Online CP-Dictionary Learning Algorithm
Generalizes CP-decomposition for tensors, dictionary learning algorithm for vector-valued signals, and Online Nonnegative Matrix Factorization.

References

These codes are based on my paper below:

  1. Christopher Strohmeier, Hanbaek Lyu, and Deanna Needell, “Online Dictionary Learning for Tensor Factorization” (submitted. Preprint available upon request.)

File description

  1. src/ocpdl.py : main Online CPDL algorithm implementation
  2. src/BCD-DR.py : implementation for Alternatiing Least Squares and Multiplicative Update for NCPD. Original repo: https://github.com/HanbaekLyu/BCD-DR
  3. OCPDL_benchmark.py : benchmark on NCPD against ALS and MU (generates benchmark figures in the paper)
  4. image_reconstruction_OCPDL.py : Applicatoin codes for CP-dictionary learning for color images
  5. video_reconstruction_OCPDL.py: Applicatoin codes for CP-dictionary learning for color videos
  6. IMG_CP_reconstruction_main.py: Main script for image application (example run on Van Gogh's "Cafe terrace at night")
  7. VIDEO_CP_reconstruction_main.py: Main script for video application (example run on mice brain activity video)

Authors

  • Hanbaek Lyu - Initial work - Website
  • Christopher Strohmeier - Initial work - Website

License

This project is licensed under the MIT License - see the LICENSE.md file for details

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