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R(2+1)D unit #322

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R(2+1)D unit #322

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Commits on Dec 20, 2019

  1. R(2+1)D unit (facebookresearch#322) 

    Summary:
Pull Request resolved: facebookresearch#322

- Implement R(2+1)D unit (https://arxiv.org/abs/1711.11248).
-  Compared with vanilla R3D model,  in R(2+1)D we replace a 3D conv with a 2D spatial conv and a 1D temporal conv, while the total No. of model parameters are kept the same.
- We use R(2+1)D unit in `ResNeXt3DStem` and `BasicTransformation`.

Reviewed By: aadcock

Differential Revision: D19084922

fbshipit-source-id: ebce9b7de834fb8eca25b54d285726e974077108
    @stephenyan1231 @facebook-github-bot
    stephenyan1231 authored and facebook-github-bot committed Dec 20, 2019
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