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https://github.com/braun-steven/multiway-algorithms-comparison

https://github.com/braun-steven/multiway-algorithms-comparison

Science Score: 13.0%

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Keywords

algorithms multiway nway parafac
Last synced: 6 months ago · JSON representation

Repository

Basic Info
  • Host: GitHub
  • Owner: braun-steven
  • Language: Java
  • Default Branch: master
  • Size: 2.38 MB
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Topics
algorithms multiway nway parafac
Created almost 8 years ago · Last pushed almost 8 years ago
Metadata Files
Readme

README.md

Multiway-Algorithms PARAFAC Comparison Test

To compare the multiway-algorithms PARAFAC implementation with the matlab nway toolbox run the following step:

  1. Initialize the mutliway-algorithms and nway-toolbox local installations by running bash $ bash init.sh This should clone the latest multiway-algorithms develop branch and the nway repository

  2. Run the nway PARAFAC implementation: bash $ bash run-nway-toolbox-parafac.sh Results in: ``` Loss =

    413.6739 ```

  3. Run the multiway-algorithms PARAFAC implementation: bash $ bash run-multiway-alg-parafac.sh Results in: [INFO ] 18:14:11.388 [Main.main()] Main - Loss = 413.9942821962213

The data can be found in matlab/Fluorescence\ EEMs/ as .dat files or in data/ as .csv files. The matlab script matlab/generate_data_dir.m generates the .csv files.

Algorithm Setup

Both runs are started with the same options:

Option | Value --- | --- number of components | 4..10 max. iterations | 2500 improvement tolerance threshold | 10e-6 init method | {random orthogonalized matrices, SVD}

Results

number of components | nway loss (random orth. init)| mwa loss (random orth. init) | nway loss (SVD init)| mwa loss (SVD init) :---: | ---: | ---: | ---: | ---: 3 | 562.3193 | 562.6590 | 562.3179 | 562.9468 4 | 413.7502 | 413.9942 | 413.7559 | 414.0267 5 | 306.6297 | 307.1157 | 306.691 | 310.7814 6 | 217.8061| 218.3507 | 217.7974| 218.0926 7 | 175.0781 | 175.6058 | 175.0551 | 175.9703 8 | 144.0486 | 145.9342 | 143.9903 | 145.5471 9 | 122.1815 | 126.5388 | 122.2394 | 122.3786 10 | 104.1776 | 109.5957 | 104.1796 | 107.6224

Owner

  • Name: Steven Braun
  • Login: braun-steven
  • Kind: user
  • Company: @ml-research

PhD Student at the AIML Lab @ml-research, Technical University of Darmstadt

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Dependencies

pom.xml maven
  • nz.ac.waikato.cms.adams:multiway-algorithms 0.0.4-SNAPSHOT
  • org.apache.logging.log4j:log4j-core 2.9.1