分享一个CNN模型的pytorch实现集锦，并根据以下文章进行了改进，希望这些工作能对大家所帮助！

Awesome CIFAR Zoo

作者：BIGBALLON
来源：https://github.com/BIGBALLON/CIFAR-ZOO

Requirements and Usage

Requirements

• Python >= 3.5
• PyTorch >= 0.4
• TensorFlow/Tensorboard (if you want to use the tensorboard for visualization)
• Other dependencies (pyyaml, easydict, tensorboardX)

pip install -r requirements.txt

Usage

simply run the cmd for the training:

## 1 GPU for lenet
CUDA_VISIBLE_DEVICES=0 python -u train.py --work-path ./experiments/cifar10/lenet

## resume from ckpt
CUDA_VISIBLE_DEVICES=0 python -u train.py --work-path ./experiments/cifar10/lenet --resume

## 2 GPUs for resnet1202
CUDA_VISIBLE_DEVICES=0,1 python -u train.py --work-path ./experiments/cifar10/preresnet1202

## 4 GPUs for densenet190bc
CUDA_VISIBLE_DEVICES=0,1,2,3 python -u train.py --work-path ./experiments/cifar10/densenet190bc

We use yaml file config.yaml to save the parameters, check any files in ./experimets for more details.
You can see the training curve via tensorboard, tensorboard --logdir path-to-event --port your-port.
The training log will be dumped via logging, check log.txt in your work path.

Results on CIFAR

Vanilla architectures

architecture params batch size epoch C10 test acc (%) C100 test acc (%) Lecun 62K 128 250 67.46 34.10 alexnet 2.4M 128 250 75.56 38.67 vgg19 20M 128 250 93.00 72.07 preresnet20 0.27M 128 250 91.88 67.03 preresnet110 1.7M 128 250 94.24 72.96 preresnet1202 19.4M 128 250 94.74 75.28 densenet100bc 0.76M 64 300 95.08 77.55 densenet190bc 25.6M 64 300 96.11 82.59 resnext29_16x64d 68.1M 128 300 95.94 83.18 se_resnext29_16x64d 68.6M 128 300 96.15 83.65 cbam_resnext29_16x64d 68.7M 128 300 96.27 83.62 ge_resnext29_16x64d 70.0M 128 300 96.21 83.57

With additional regularization

PS: the default data augmentation methods are RandomCrop + RandomHorizontalFlip + Normalize,
and the √ means which additional method be used.

architecture epoch cutout mixup C10 test acc (%) preresnet20 250

91.88 preresnet20 250 √

92.57 preresnet20 250

√ 92.71 preresnet20 250 √ √ 92.66 preresnet110 250

94.24 preresnet110 250 √

94.67 preresnet110 250

√ 94.94 preresnet110 250 √ √ 95.66 se_resnext29_16x64d 300

96.15 se_resnext29_16x64d 300 √

96.60 se_resnext29_16x64d 300

√ 96.86 se_resnext29_16x64d 300 √ √ 97.03 cbam_resnext29_16x64d 300 √ √ 97.16 ge_resnext29_16x64d 300 √ √ 97.19 -- -- -- -- -- shake_resnet26_2x64d 1800

96.94 shake_resnet26_2x64d 1800 √

97.20 shake_resnet26_2x64d 1800

√ 97.42 shake_resnet26_2x64d 1800 √ √ 97.71

PS: shake_resnet26_2x64d achieved 97.71% test accuracy with cutout and mixup!!
It's cool, right?

With different LR scheduler

architecture epoch step decay cosine htd(-6,3) cutout mixup C10 test acc (%) preresnet20 250 √

91.88 preresnet20 250

√

92.13 preresnet20 250

√

92.44 preresnet20 250

√ √ √ 93.30 preresnet110 250 √

94.24 preresnet110 250

√

94.48 preresnet110 250

√

94.82 preresnet110 250

√ √ √ 95.88

Acknowledgments

Provided codes were adapted from

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