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<a href="https://github.com/rwightman/pytorch-image-models/edit/master/docs/changes.md" title="Edit this page" class="md-content__button md-icon">
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25z"/></svg>
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<h1 id="recent-changes">Recent Changes</h1>
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<h3 id="oct-30-2020">Oct 30, 2020</h3>
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<ul>
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<li>Test with PyTorch 1.7 and fix a small top-n metric view vs reshape issue.</li>
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<li>Convert newly added 224x224 Vision Transformer weights from official JAX repo. 81.8 top-1 for B/16, 83.1 L/16.</li>
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<li>Support PyTorch 1.7 optimized, native SiLU (aka Swish) activation. Add mapping to 'silu' name, custom swish will eventually be deprecated.</li>
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<li>Fix regression for loading pretrained classifier via direct model entrypoint functions. Didn't impact create_model() factory usage.</li>
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<li>PyPi release @ 0.3.0 version!</li>
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</ul>
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<h3 id="oct-26-2020">Oct 26, 2020</h3>
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<ul>
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<li>Update Vision Transformer models to be compatible with official code release at <a href="https://github.com/google-research/vision_transformer">https://github.com/google-research/vision_transformer</a></li>
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<li>Add Vision Transformer weights (ImageNet-21k pretrain) for 384x384 base and large models converted from official jax impl<ul>
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<li>ViT-B/16 - 84.2</li>
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<li>ViT-B/32 - 81.7</li>
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<li>ViT-L/16 - 85.2</li>
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<li>ViT-L/32 - 81.5</li>
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</ul>
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</li>
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</ul>
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<h3 id="oct-21-2020">Oct 21, 2020</h3>
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<ul>
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<li>Weights added for Vision Transformer (ViT) models. 77.86 top-1 for 'small' and 79.35 for 'base'. Thanks to <a href="https://www.kaggle.com/christofhenkel">Christof</a> for training the base model w/ lots of GPUs.</li>
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</ul>
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<h3 id="oct-13-2020">Oct 13, 2020</h3>
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<ul>
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<li>Initial impl of Vision Transformer models. Both patch and hybrid (CNN backbone) variants. Currently trying to train...</li>
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<li>Adafactor and AdaHessian (FP32 only, no AMP) optimizers</li>
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<li>EdgeTPU-M (<code>efficientnet_em</code>) model trained in PyTorch, 79.3 top-1</li>
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<li>Pip release, doc updates pending a few more changes...</li>
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</ul>
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<h3 id="sept-18-2020">Sept 18, 2020</h3>
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<ul>
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<li>New ResNet 'D' weights. 72.7 (top-1) ResNet-18-D, 77.1 ResNet-34-D, 80.5 ResNet-50-D</li>
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<li>Added a few untrained defs for other ResNet models (66D, 101D, 152D, 200/200D)</li>
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</ul>
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<h3 id="sept-3-2020">Sept 3, 2020</h3>
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<ul>
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<li>New weights<ul>
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<li>Wide-ResNet50 - 81.5 top-1 (vs 78.5 torchvision)</li>
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<li>SEResNeXt50-32x4d - 81.3 top-1 (vs 79.1 cadene)</li>
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</ul>
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</li>
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<li>Support for native Torch AMP and channels_last memory format added to train/validate scripts (<code>--channels-last</code>, <code>--native-amp</code> vs <code>--apex-amp</code>)</li>
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<li>Models tested with channels_last on latest NGC 20.08 container. AdaptiveAvgPool in attn layers changed to mean((2,3)) to work around bug with NHWC kernel.</li>
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</ul>
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<h3 id="aug-12-2020">Aug 12, 2020</h3>
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<ul>
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<li>New/updated weights from training experiments<ul>
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<li>EfficientNet-B3 - 82.1 top-1 (vs 81.6 for official with AA and 81.9 for AdvProp)</li>
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<li>RegNetY-3.2GF - 82.0 top-1 (78.9 from official ver)</li>
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<li>CSPResNet50 - 79.6 top-1 (76.6 from official ver)</li>
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</ul>
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</li>
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<li>Add CutMix integrated w/ Mixup. See <a href="https://github.com/rwightman/pytorch-image-models/pull/218">pull request</a> for some usage examples</li>
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<li>Some fixes for using pretrained weights with <code>in_chans</code> != 3 on several models.</li>
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</ul>
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<h3 id="aug-5-2020">Aug 5, 2020</h3>
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<p>Universal feature extraction, new models, new weights, new test sets.</p>
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<ul>
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<li>All models support the <code>features_only=True</code> argument for <code>create_model</code> call to return a network that extracts features from the deepest layer at each stride.</li>
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<li>New models<ul>
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<li>CSPResNet, CSPResNeXt, CSPDarkNet, DarkNet</li>
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<li>ReXNet</li>
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<li>(Modified Aligned) Xception41/65/71 (a proper port of TF models)</li>
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</ul>
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</li>
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<li>New trained weights<ul>
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<li>SEResNet50 - 80.3 top-1</li>
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<li>CSPDarkNet53 - 80.1 top-1</li>
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<li>CSPResNeXt50 - 80.0 top-1</li>
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<li>DPN68b - 79.2 top-1</li>
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<li>EfficientNet-Lite0 (non-TF ver) - 75.5 (submitted by <a href="https://github.com/hal-314">@hal-314</a>)</li>
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</ul>
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</li>
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<li>Add 'real' labels for ImageNet and ImageNet-Renditions test set, see <a href="results/README.md"><code>results/README.md</code></a></li>
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<li>Test set ranking/top-n diff script by <a href="https://github.com/KushajveerSingh">@KushajveerSingh</a></li>
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<li>Train script and loader/transform tweaks to punch through more aug arguments</li>
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<li>README and documentation overhaul. See initial (WIP) documentation at <a href="https://rwightman.github.io/pytorch-image-models/">https://rwightman.github.io/pytorch-image-models/</a></li>
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<li>adamp and sgdp optimizers added by <a href="https://github.com/hellbell">@hellbell</a></li>
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</ul>
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<h3 id="june-11-2020">June 11, 2020</h3>
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<p>Bunch of changes:</p>
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<ul>
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<li>DenseNet models updated with memory efficient addition from torchvision (fixed a bug), blur pooling and deep stem additions</li>
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<li>VoVNet V1 and V2 models added, 39 V2 variant (ese_vovnet_39b) trained to 79.3 top-1</li>
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<li>Activation factory added along with new activations:<ul>
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<li>select act at model creation time for more flexibility in using activations compatible with scripting or tracing (ONNX export)</li>
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<li>hard_mish (experimental) added with memory-efficient grad, along with ME hard_swish</li>
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<li>context mgr for setting exportable/scriptable/no_jit states</li>
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</ul>
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</li>
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<li>Norm + Activation combo layers added with initial trial support in DenseNet and VoVNet along with impl of EvoNorm and InplaceAbn wrapper that fit the interface</li>
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<li>Torchscript works for all but two of the model types as long as using Pytorch 1.5+, tests added for this</li>
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<li>Some import cleanup and classifier reset changes, all models will have classifier reset to nn.Identity on reset_classifer(0) call</li>
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<li>Prep for 0.1.28 pip release</li>
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</ul>
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<h3 id="may-12-2020">May 12, 2020</h3>
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<ul>
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<li>Add ResNeSt models (code adapted from <a href="https://github.com/zhanghang1989/ResNeSt">https://github.com/zhanghang1989/ResNeSt</a>, paper <a href="https://arxiv.org/abs/2004.08955">https://arxiv.org/abs/2004.08955</a>))</li>
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</ul>
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<h3 id="may-3-2020">May 3, 2020</h3>
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<ul>
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<li>Pruned EfficientNet B1, B2, and B3 (<a href="https://arxiv.org/abs/2002.08258">https://arxiv.org/abs/2002.08258</a>) contributed by <a href="https://github.com/yoniaflalo">Yonathan Aflalo</a></li>
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</ul>
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<h3 id="may-1-2020">May 1, 2020</h3>
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<ul>
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<li>Merged a number of execellent contributions in the ResNet model family over the past month<ul>
|
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<li>BlurPool2D and resnetblur models initiated by <a href="https://github.com/VRandme">Chris Ha</a>, I trained resnetblur50 to 79.3.</li>
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<li>TResNet models and SpaceToDepth, AntiAliasDownsampleLayer layers by <a href="https://github.com/mrT23">mrT23</a></li>
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<li>ecaresnet (50d, 101d, light) models and two pruned variants using pruning as per (<a href="https://arxiv.org/abs/2002.08258">https://arxiv.org/abs/2002.08258</a>) by <a href="https://github.com/yoniaflalo">Yonathan Aflalo</a></li>
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</ul>
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</li>
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<li>200 pretrained models in total now with updated results csv in results folder</li>
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</ul>
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