AugReg release

Author: rwightman

README.md

@@ -23,6 +23,25 @@ I'm fortunate to be able to dedicate significant time and money of my own suppor
 
 ## What's New
 
+### June 20, 2021
+* Release Vision Transformer 'AugReg' weights from [How to train your ViT? Data, Augmentation, and Regularization in Vision Transformers](https://arxiv.org/abs/2106.10270)
+  * .npz weight loading support added, can load any of the 50K+ weights from the [AugReg series](https://console.cloud.google.com/storage/browser/vit_models/augreg)
+  * See [example notebook](https://colab.research.google.com/github/google-research/vision_transformer/blob/master/vit_jax_augreg.ipynb) from official impl for navigating the augreg weights
+  * Replaced all default weights w/ best AugReg variant (if possible). All AugReg 21k classifiers work.
+    * Highlights: `vit_large_patch16_384` (87.1 top-1), `vit_large_r50_s32_384` (86.2 top-1), `vit_base_patch16_384` (86.0 top-1)
+  * `vit_deit_*` renamed to just `deit_*`
+  * Remove my old small model, replace with DeiT compatible small w/ AugReg weights
+* Add 1st training of my `gmixer_24_224` MLP /w GLU, 78.1 top-1 w/ 25M params.
+* Add weights from official ResMLP release (https://github.com/facebookresearch/deit)
+* Add `eca_nfnet_l2` weights from my 'lightweight' series. 84.7 top-1 at 384x384.
+* Add distilled BiT 50x1 student and 152x2 Teacher weights from  [Knowledge distillation: A good teacher is patient and consistent](https://arxiv.org/abs/2106.05237)
+* NFNets and ResNetV2-BiT models work w/ Pytorch XLA now
+  * weight standardization uses F.batch_norm instead of std_mean (std_mean wasn't lowered)
+  * eps values adjusted, will be slight differences but should be quite close
+* Improve test coverage and classifier interface of non-conv (vision transformer and mlp) models
+* Cleanup a few classifier / flatten details for models w/ conv classifiers or early global pool
+* Please report any regressions, this PR touched quite a few models.
+
 ### June 8, 2021
 * Add first ResMLP weights, trained in PyTorch XLA on TPU-VM w/ my XLA branch. 24 block variant, 79.2 top-1.
 * Add ResNet51-Q model w/ pretrained weights at 82.36 top-1.

timm/models/vision_transformer.py

@@ -1,7 +1,12 @@
 """ Vision Transformer (ViT) in PyTorch
 
-A PyTorch implement of Vision Transformers as described in
-'An Image Is Worth 16 x 16 Words: Transformers for Image Recognition at Scale' - https://arxiv.org/abs/2010.11929
+A PyTorch implement of Vision Transformers as described in:
+
+'An Image Is Worth 16 x 16 Words: Transformers for Image Recognition at Scale'
+    - https://arxiv.org/abs/2010.11929
+
+`How to train your ViT? Data, Augmentation, and Regularization in Vision Transformers`
+    - https://arxiv.org/abs/2106.TODO
 
 The official jax code is released and available at https://github.com/google-research/vision_transformer
 
@@ -15,7 +20,7 @@
 * Simple transformer style inspired by Andrej Karpathy's https://github.com/karpathy/minGPT
 * Bert reference code checks against Huggingface Transformers and Tensorflow Bert
 
-Hacked together by / Copyright 2020 Ross Wightman
+Hacked together by / Copyright 2021 Ross Wightman
 """
 import math
 import logging

timm/models/vision_transformer_hybrid.py

@@ -1,13 +1,17 @@
 """ Hybrid Vision Transformer (ViT) in PyTorch
 
-A PyTorch implement of the Hybrid Vision Transformers as described in
+A PyTorch implement of the Hybrid Vision Transformers as described in:
+
 'An Image Is Worth 16 x 16 Words: Transformers for Image Recognition at Scale'
     - https://arxiv.org/abs/2010.11929
 
-NOTE This relies on code in vision_transformer.py. The hybrid model definitions were moved here to
-keep file sizes sane.
+`How to train your ViT? Data, Augmentation, and Regularization in Vision Transformers`
+    - https://arxiv.org/abs/2106.TODO
+
+NOTE These hybrid model definitions depend on code in vision_transformer.py.
+They were moved here to keep file sizes sane.
 
-Hacked together by / Copyright 2020 Ross Wightman
+Hacked together by / Copyright 2021 Ross Wightman
 """
 from copy import deepcopy
 from functools import partial