https://github.com/meiqua/cs231n

https://github.com/meiqua/cs231n

cs231n derivation

Last synced: over 1 year ago
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• Host: GitHub
• URL: https://github.com/meiqua/cs231n
• Owner: meiqua
• Created: 2017-08-29T12:00:11.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2017-09-26T11:33:59.000Z (almost 9 years ago)
• Last Synced: 2025-02-01T17:44:13.502Z (over 1 year ago)
• Topics: cs231n, derivation
• Language: Jupyter Notebook
• Size: 9.85 MB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# cs231n

cs231n assignment  

some record, for impressive moment  

## batchnorm_backward_alt_derivation, assignment2  

derive the batchnorm_backward_alt by hand, using an element-wise method.  

There is a mistake at last step in the picture, there should be a x.shape[0] multiplying the first dout.  

But the code is right.

![bn](/bn.jpg)

[墙裂推荐的求导教程](https://zhuanlan.zhihu.com/p/24709748)

[vectorization using the above method](https://zhuanlan.zhihu.com/p/29148738)

## knn compute_distances_no_loops, assignment1  

![KNN](/KNN.jpg)