https://github.com/pvigier/preprocessings

Demo for the part 2 of the tutorial on pychain
https://github.com/pvigier/preprocessings

cost-function gradient-descent preprocessing visualization

Last synced: 8 months ago
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Demo for the part 2 of the tutorial on pychain

• Host: GitHub
• URL: https://github.com/pvigier/preprocessings
• Owner: pvigier
• Created: 2017-07-23T21:16:37.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2018-04-27T21:34:03.000Z (almost 8 years ago)
• Last Synced: 2025-02-23T09:17:20.545Z (12 months ago)
• Topics: cost-function, gradient-descent, preprocessing, visualization
• Language: Python
• Homepage:
• Size: 2.93 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# preprocessings

Two demos shown in the [part 2](https://pvigier.github.io/2017/08/13/pychain-part2-mnist.html) of my tutorial on pychain.

The file preprocessings.py allows to visualize the effect of preprocessings on a simple dataset.

![Visualization of the preprocessings](https://pvigier.github.io/media/img/part2/preprocessings.png)

The file cost_function.py create an animation of the first steps of the gradient descent algorithm for the cost functions obtained with a unpreprocessed dataset and a preprocessed dataset.

![Gradient descent](https://pvigier.github.io/media/img/part2/cost_function.gif)