深度学习中的Attention、MLP、Conv和Re-parameter论文大总结

不知道大家有没有这样的体会，在读论文的时候经常会发现一些非常精妙的idea，作者在各个任务上都用这个结构达到非常好的performance。(ᗒᗨᗕ)看完论文之后，不禁为作者提出的这个idea拍手叫好（＾ω＾），但是打开作者的github一看，人都看傻了（也可能只是我是这样的 ╥﹏╥）。

因为看到这个简单的结构被嵌入到了各个任务的代码框架中，导致代码比较冗余，对于像我这样的小白(╯_╰)，真的很难找到论文的核心代码。（明明我根本不care这些具体任务，为什么让我看这么多不相关的代码，天哪！！！），导致在论文和网络的核心思想理解上会有一定困难。

因此，我把最近看的Attention、MLP、Conv和Re-parameter论文的核心代码进行了整理和复现，方便各位读者理解。

项目会持续更新最新的论文工作，欢迎大家follow和star该工作，若项目在复现和整理过程中有任何问题，欢迎大家在issue中提出。（里面都是一些论文的核心代码 ，因为是自己复现的，所以也不能保证百分百正确，不过大家可以一起交流学习哈，有问题欢迎指出，我会及时回复哒，＾ω＾）

项目地址：https://github.com/xmu-xiaoma666/External-Attention-pytorch

在我爱计算机视觉公众号后台回复 “深度学习论文” 即可收到本文盘点的所有论文。

Contents

• Attention Series

    - 1. External Attention Usage

    - 2. Self Attention Usage

    - 3. Simplified Self Attention Usage

    - 4. Squeeze-and-Excitation Attention Usage

    - 5. SK Attention Usage

    - 6. CBAM Attention Usage

    - 7. BAM Attention Usage

    - 8. ECA Attention Usage

    - 9. DANet Attention Usage

    - 10. Pyramid Split Attention (PSA) Usage

    - 11. Efficient Multi-Head Self-Attention(EMSA) Usage

    - 12. Shuffle Attention Usage

    - 13. MUSE Attention Usage

    - 14. SGE Attention Usage

    - 15. A2 Attention Usage

    - 16. AFT Attention Usage

    - 17. Outlook Attention Usage

    - 18. ViP Attention Usage

    - 19. CoAtNet Attention Usage

    - 20. HaloNet Attention Usage

    - 21. Polarized Self-Attention Usage

    - 22. CoTAttention Usage

• MLP Series

    - 1. RepMLP Usage

    - 2. MLP-Mixer Usage

    - 3. ResMLP Usage

    - 4. gMLP Usage

• Re-Parameter(ReP) Series

    - 1. RepVGG Usage

    - 2. ACNet Usage

    - 3. Diverse Branch Block(DDB) Usage

• Convolution Series

    - 1. Depthwise Separable Convolution Usage

    - 2. MBConv Usage

    - 3. Involution Usage

---

▊ Attention Series

• Pytorch implementation of "Beyond Self-attention: External Attention using Two Linear Layers for Visual Tasks---arXiv 2021.05.05"

• Pytorch implementation of "Attention Is All You Need---NIPS2017"

• Pytorch implementation of "Squeeze-and-Excitation Networks---CVPR2018"

• Pytorch implementation of "Selective Kernel Networks---CVPR2019"

• Pytorch implementation of "CBAM: Convolutional Block Attention Module---ECCV2018"

• Pytorch implementation of "BAM: Bottleneck Attention Module---BMCV2018"

• Pytorch implementation of "ECA-Net: Efficient Channel Attention for Deep Convolutional Neural Networks---CVPR2020"

• Pytorch implementation of "Dual Attention Network for Scene Segmentation---CVPR2019"

• Pytorch implementation of "EPSANet: An Efficient Pyramid Split Attention Block on Convolutional Neural Network---arXiv 2021.05.30"

• Pytorch implementation of "ResT: An Efficient Transformer for Visual Recognition---arXiv 2021.05.28"

• Pytorch implementation of "SA-NET: SHUFFLE ATTENTION FOR DEEP CONVOLUTIONAL NEURAL NETWORKS---ICASSP 2021"

• Pytorch implementation of "MUSE: Parallel Multi-Scale Attention for Sequence to Sequence Learning---arXiv 2019.11.17"

• Pytorch implementation of "Spatial Group-wise Enhance: Improving Semantic Feature Learning in Convolutional Networks---arXiv 2019.05.23"

• Pytorch implementation of "A2-Nets: Double Attention Networks---NIPS2018"

• Pytorch implementation of "An Attention Free Transformer---ICLR2021 (Apple New Work)"

• Pytorch implementation of VOLO: Vision Outlooker for Visual Recognition---arXiv 2021.06.24"

• Pytorch implementation of Vision Permutator: A Permutable MLP-Like Architecture for Visual Recognition---arXiv 2021.06.23

• Pytorch implementation of CoAtNet: Marrying Convolution and Attention for All Data Sizes---arXiv 2021.06.09

• Pytorch implementation of Scaling Local Self-Attention for Parameter Efficient Visual Backbones---CVPR2021 Oral 

• Pytorch implementation of Polarized Self-Attention: Towards High-quality Pixel-wise Regression---arXiv 2021.07.02  

• Pytorch implementation of Contextual Transformer Networks for Visual Recognition---arXiv 2021.07.26

---

1. External Attention Usage

1.1. Paper

"Beyond Self-attention: External Attention using Two Linear Layers for Visual Tasks"

https://arxiv.org/abs/2105.02358

1.2. Overview

1.3. Code

from attention.ExternalAttention import ExternalAttention
import torch

input=torch.randn(50,49,512)
ea = ExternalAttention(d_model=512,S=8)
output=ea(input)
print(output.shape)

---

2. Self Attention Usage

2.1. Paper

"Attention Is All You Need"

https://arxiv.org/pdf/1706.03762.pdf

2.2. Overview

2.3. Code

from attention.SelfAttention import ScaledDotProductAttention
import torch

input=torch.randn(50,49,512)
sa = ScaledDotProductAttention(d_model=512, d_k=512, d_v=512, h=8)
output=sa(input,input,input)
print(output.shape)

---

3. Simplified Self Attention Usage

3.1. Paper

None

3.2. Overview

3.3. Code

from attention.SimplifiedSelfAttention import SimplifiedScaledDotProductAttention
import torch

input=torch.randn(50,49,512)
ssa = SimplifiedScaledDotProductAttention(d_model=512, h=8)
output=ssa(input,input,input)
print(output.shape)

---

4. Squeeze-and-Excitation Attention Usage

4.1. Paper

"Squeeze-and-Excitation Networks"

https://arxiv.org/abs/1709.01507

4.2. Overview

4.3. Code

from attention.SEAttention import SEAttention
import torch

input=torch.randn(50,512,7,7)
se = SEAttention(channel=512,reduction=8)
output=se(input)
print(output.shape)

---

5. SK Attention Usage

5.1. Paper

"Selective Kernel Networks"

https://arxiv.org/pdf/1903.06586.pdf

5.2. Overview

5.3. Code

from attention.SKAttention import SKAttention
import torch

input=torch.randn(50,512,7,7)
se = SKAttention(channel=512,reduction=8)
output=se(input)
print(output.shape)

---

6. CBAM Attention Usage

6.1. Paper

"CBAM: Convolutional Block Attention Module"

https://openaccess.thecvf.com/content_ECCV_2018/papers/Sanghyun_Woo_Convolutional_Block_Attention_ECCV_2018_paper.pdf

6.2. Overview

6.3. Code

from attention.CBAM import CBAMBlock
import torch

input=torch.randn(50,512,7,7)
kernel_size=input.shape[2]
cbam = CBAMBlock(channel=512,reduction=16,kernel_size=kernel_size)
output=cbam(input)
print(output.shape)

---

7. BAM Attention Usage

7.1. Paper

"BAM: Bottleneck Attention Module"

https://arxiv.org/pdf/1807.06514.pdf

7.2. Overview

7.3. Code

from attention.BAM import BAMBlock
import torch

input=torch.randn(50,512,7,7)
bam = BAMBlock(channel=512,reduction=16,dia_val=2)
output=bam(input)
print(output.shape)

---

8. ECA Attention Usage

8.1. Paper

"ECA-Net: Efficient Channel Attention for Deep Convolutional Neural Networks"

https://arxiv.org/pdf/1910.03151.pdf

8.2. Overview

8.3. Code

from attention.ECAAttention import ECAAttention
import torch

input=torch.randn(50,512,7,7)
eca = ECAAttention(kernel_size=3)
output=eca(input)
print(output.shape)

---

9. DANet Attention Usage

9.1. Paper

"Dual Attention Network for Scene Segmentation"

https://arxiv.org/pdf/1809.02983.pdf

9.2. Overview

9.3. Code

from attention.DANet import DAModule
import torch

input=torch.randn(50,512,7,7)
danet=DAModule(d_model=512,kernel_size=3,H=7,W=7)
print(danet(input).shape)

---

10. Pyramid Split Attention Usage

10.1. Paper

"EPSANet: An Efficient Pyramid Split Attention Block on Convolutional Neural Network"

https://arxiv.org/pdf/2105.14447.pdf

10.2. Overview

10.3. Code

from attention.PSA import PSA
import torch

input=torch.randn(50,512,7,7)
psa = PSA(channel=512,reduction=8)
output=psa(input)
print(output.shape)

---

11. Efficient Multi-Head Self-Attention Usage

11.1. Paper

"ResT: An Efficient Transformer for Visual Recognition"

https://arxiv.org/abs/2105.13677

11.2. Overview

11.3. Code

from attention.EMSA import EMSA
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(50,64,512)
emsa = EMSA(d_model=512, d_k=512, d_v=512, h=8,H=8,W=8,ratio=2,apply_transform=True)
output=emsa(input,input,input)
print(output.shape)
    

---

12. Shuffle Attention Usage

12.1. Paper

"SA-NET: SHUFFLE ATTENTION FOR DEEP CONVOLUTIONAL NEURAL NETWORKS"

https://arxiv.org/pdf/2102.00240.pdf

12.2. Overview

12.3. Code

from attention.ShuffleAttention import ShuffleAttention
import torch
from torch import nn
from torch.nn import functional as F


input=torch.randn(50,512,7,7)
se = ShuffleAttention(channel=512,G=8)
output=se(input)
print(output.shape)

    

---

13. MUSE Attention Usage

13.1. Paper

"MUSE: Parallel Multi-Scale Attention for Sequence to Sequence Learning"

https://arxiv.org/abs/1911.09483

13.2. Overview

13.3. Code

from attention.MUSEAttention import MUSEAttention
import torch
from torch import nn
from torch.nn import functional as F


input=torch.randn(50,49,512)
sa = MUSEAttention(d_model=512, d_k=512, d_v=512, h=8)
output=sa(input,input,input)
print(output.shape)

---

14. SGE Attention Usage

14.1. Paper

Spatial Group-wise Enhance: Improving Semantic Feature Learning in Convolutional Networks

https://arxiv.org/pdf/1905.09646.pdf

14.2. Overview

14.3. Code

from attention.SGE import SpatialGroupEnhance
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(50,512,7,7)
sge = SpatialGroupEnhance(groups=8)
output=sge(input)
print(output.shape)

---

15. A2 Attention Usage

15.1. Paper

A2-Nets: Double Attention Networks

https://arxiv.org/pdf/1810.11579.pdf

15.2. Overview

15.3. Code

from attention.A2Atttention import DoubleAttention
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(50,512,7,7)
a2 = DoubleAttention(512,128,128,True)
output=a2(input)
print(output.shape)

---

16. AFT Attention Usage

16.1. Paper

An Attention Free Transformer

https://arxiv.org/pdf/2105.14103v1.pdf

16.2. Overview

16.3. Code

from attention.AFT import AFT_FULL
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(50,49,512)
aft_full = AFT_FULL(d_model=512, n=49)
output=aft_full(input)
print(output.shape)

---

17. Outlook Attention Usage

17.1. Paper

VOLO: Vision Outlooker for Visual Recognition"

https://arxiv.org/abs/2106.13112
【论文解析】https://zhuanlan.zhihu.com/p/385561050

17.2. Overview

17.3. Code

from attention.OutlookAttention import OutlookAttention
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(50,28,28,512)
outlook = OutlookAttention(dim=512)
output=outlook(input)
print(output.shape)

---

18. ViP Attention Usage

18.1. Paper

Vision Permutator: A Permutable MLP-Like Architecture for Visual Recognition"

https://arxiv.org/abs/2106.12368
【论文解析】https://mp.weixin.qq.com/s/5gonUQgBho_m2O54jyXF_Q

18.2. Overview

18.3. Code

from attention.ViP import WeightedPermuteMLP
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(64,8,8,512)
seg_dim=8
vip=WeightedPermuteMLP(512,seg_dim)
out=vip(input)
print(out.shape)

---

19. CoAtNet Attention Usage

19.1. Paper

CoAtNet: Marrying Convolution and Attention for All Data Sizes"

https://arxiv.org/abs/2106.04803
【论文解析】https://zhuanlan.zhihu.com/p/385578588

19.2. Overview

None

19.3. Code

from attention.CoAtNet import CoAtNet
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(1,3,224,224)
mbconv=CoAtNet(in_ch=3,image_size=224)
out=mbconv(input)
print(out.shape)

---

20. HaloNet Attention Usage

20.1. Paper

Scaling Local Self-Attention for Parameter Efficient Visual Backbones"

https://arxiv.org/pdf/2103.12731.pdf
【论文解析】https://zhuanlan.zhihu.com/p/388598744

20.2. Overview

20.3. Code

from attention.HaloAttention import HaloAttention
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(1,512,8,8)
halo = HaloAttention(dim=512,
    block_size=2,
    halo_size=1,)
output=halo(input)
print(output.shape)

---

21. Polarized Self-Attention Usage

21.1. Paper

Polarized Self-Attention: Towards High-quality Pixel-wise Regression"

https://arxiv.org/abs/2107.00782
【论文解析】https://zhuanlan.zhihu.com/p/389770482

21.2. Overview

21.3. Code

from attention.PolarizedSelfAttention import ParallelPolarizedSelfAttention,SequentialPolarizedSelfAttention
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(1,512,7,7)
psa = SequentialPolarizedSelfAttention(channel=512)
output=psa(input)
print(output.shape)

---

22. CoTAttention Usage

22.1. Paper

Contextual Transformer Networks for Visual Recognition---arXiv 2021.07.26

https://arxiv.org/abs/2107.12292

22.2. Overview

22.3. Code

from attention.CoTAttention import CoTAttention
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(50,512,7,7)
cot = CoTAttention(dim=512,kernel_size=3)
output=cot(input)
print(output.shape)

---

▊ MLP Series

• Pytorch implementation of "RepMLP: Re-parameterizing Convolutions into Fully-connected Layers for Image Recognition---arXiv 2021.05.05"

• Pytorch implementation of "MLP-Mixer: An all-MLP Architecture for Vision---arXiv 2021.05.17"

• Pytorch implementation of "ResMLP: Feedforward networks for image classification with data-efficient training---arXiv 2021.05.07"

• Pytorch implementation of "Pay Attention to MLPs---arXiv 2021.05.17"

---

1. RepMLP Usage

1.1. Paper

"RepMLP: Re-parameterizing Convolutions into Fully-connected Layers for Image Recognition"

https://arxiv.org/pdf/2105.01883v1.pdf

1.2. Overview

1.3. Code

from mlp.repmlp import RepMLP
import torch
from torch import nn

N=4 #batch size
C=512 #input dim
O=1024 #output dim
H=14 #image height
W=14 #image width
h=7 #patch height
w=7 #patch width
fc1_fc2_reduction=1 #reduction ratio
fc3_groups=8 # groups
repconv_kernels=[1,3,5,7] #kernel list
repmlp=RepMLP(C,O,H,W,h,w,fc1_fc2_reduction,fc3_groups,repconv_kernels=repconv_kernels)
x=torch.randn(N,C,H,W)
repmlp.eval()
for module in repmlp.modules():
    if isinstance(module, nn.BatchNorm2d) or isinstance(module, nn.BatchNorm1d):
        nn.init.uniform_(module.running_mean, 0, 0.1)
        nn.init.uniform_(module.running_var, 0, 0.1)
        nn.init.uniform_(module.weight, 0, 0.1)
        nn.init.uniform_(module.bias, 0, 0.1)

#training result
out=repmlp(x)
#inference result
repmlp.switch_to_deploy()
deployout = repmlp(x)

print(((deployout-out)**2).sum())

---

2. MLP-Mixer Usage

2.1. Paper

"MLP-Mixer: An all-MLP Architecture for Vision"

https://arxiv.org/pdf/2105.01601.pdf

2.2. Overview

2.3. Code

from mlp.mlp_mixer import MlpMixer
import torch
mlp_mixer=MlpMixer(num_classes=1000,num_blocks=10,patch_size=10,tokens_hidden_dim=32,channels_hidden_dim=1024,tokens_mlp_dim=16,channels_mlp_dim=1024)
input=torch.randn(50,3,40,40)
output=mlp_mixer(input)
print(output.shape)

---

3. ResMLP Usage

3.1. Paper

"ResMLP: Feedforward networks for image classification with data-efficient training"

https://arxiv.org/pdf/2105.03404.pdf

3.2. Overview

3.3. Code

from mlp.resmlp import ResMLP
import torch

input=torch.randn(50,3,14,14)
resmlp=ResMLP(dim=128,image_size=14,patch_size=7,class_num=1000)
out=resmlp(input)
print(out.shape) #the last dimention is class_num

---

4. gMLP Usage

4.1. Paper

"Pay Attention to MLPs"

https://arxiv.org/abs/2105.08050

4.2. Overview

4.3. Code

from mlp.g_mlp import gMLP
import torch

num_tokens=10000
bs=50
len_sen=49
num_layers=6
input=torch.randint(num_tokens,(bs,len_sen)) #bs,len_sen
gmlp = gMLP(num_tokens=num_tokens,len_sen=len_sen,dim=512,d_ff=1024)
output=gmlp(input)
print(output.shape)

---

▊ Re-Parameter Series

• Pytorch implementation of "RepVGG: Making VGG-style ConvNets Great Again---CVPR2021"

• Pytorch implementation of "ACNet: Strengthening the Kernel Skeletons for Powerful CNN via Asymmetric Convolution Blocks---ICCV2019"

• Pytorch implementation of "Diverse Branch Block: Building a Convolution as an Inception-like Unit---CVPR2021"

---

1. RepVGG Usage

1.1. Paper

"RepVGG: Making VGG-style ConvNets Great Again"

https://arxiv.org/abs/2101.03697

1.2. Overview

1.3. Code

from rep.repvgg import RepBlock
import torch


input=torch.randn(50,512,49,49)
repblock=RepBlock(512,512)
repblock.eval()
out=repblock(input)
repblock._switch_to_deploy()
out2=repblock(input)
print('difference between vgg and repvgg')
print(((out2-out)**2).sum())

---

2. ACNet Usage

2.1. Paper

"ACNet: Strengthening the Kernel Skeletons for Powerful CNN via Asymmetric Convolution Blocks"

https://arxiv.org/abs/1908.03930

2.2. Overview

2.3. Code

from rep.acnet import ACNet
import torch
from torch import nn

input=torch.randn(50,512,49,49)
acnet=ACNet(512,512)
acnet.eval()
out=acnet(input)
acnet._switch_to_deploy()
out2=acnet(input)
print('difference:')
print(((out2-out)**2).sum())

---

3. Diverse Branch Block Usage

3.1. Paper

"Diverse Branch Block: Building a Convolution as an Inception-like Unit"

https://arxiv.org/abs/2103.13425

3.2. Overview

3.3. Code

3.3.1 Transform I

from rep.ddb import transI_conv_bn
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(1,64,7,7)
#conv+bn
conv1=nn.Conv2d(64,64,3,padding=1)
bn1=nn.BatchNorm2d(64)
bn1.eval()
out1=bn1(conv1(input))

#conv_fuse
conv_fuse=nn.Conv2d(64,64,3,padding=1)
conv_fuse.weight.data,conv_fuse.bias.data=transI_conv_bn(conv1,bn1)
out2=conv_fuse(input)

print("difference:",((out2-out1)**2).sum().item())

3.3.2 Transform II

from rep.ddb import transII_conv_branch
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(1,64,7,7)

#conv+conv
conv1=nn.Conv2d(64,64,3,padding=1)
conv2=nn.Conv2d(64,64,3,padding=1)
out1=conv1(input)+conv2(input)

#conv_fuse
conv_fuse=nn.Conv2d(64,64,3,padding=1)
conv_fuse.weight.data,conv_fuse.bias.data=transII_conv_branch(conv1,conv2)
out2=conv_fuse(input)

print("difference:",((out2-out1)**2).sum().item())

3.3.3 Transform III

from rep.ddb import transIII_conv_sequential
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(1,64,7,7)

#conv+conv
conv1=nn.Conv2d(64,64,1,padding=0,bias=False)
conv2=nn.Conv2d(64,64,3,padding=1,bias=False)
out1=conv2(conv1(input))


#conv_fuse
conv_fuse=nn.Conv2d(64,64,3,padding=1,bias=False)
conv_fuse.weight.data=transIII_conv_sequential(conv1,conv2)
out2=conv_fuse(input)

print("difference:",((out2-out1)**2).sum().item())

3.3.4 Transform IV

from rep.ddb import transIV_conv_concat
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(1,64,7,7)

#conv+conv
conv1=nn.Conv2d(64,32,3,padding=1)
conv2=nn.Conv2d(64,32,3,padding=1)
out1=torch.cat([conv1(input),conv2(input)],dim=1)

#conv_fuse
conv_fuse=nn.Conv2d(64,64,3,padding=1)
conv_fuse.weight.data,conv_fuse.bias.data=transIV_conv_concat(conv1,conv2)
out2=conv_fuse(input)

print("difference:",((out2-out1)**2).sum().item())

3.3.5 Transform V

from rep.ddb import transV_avg
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(1,64,7,7)

avg=nn.AvgPool2d(kernel_size=3,stride=1)
out1=avg(input)

conv=transV_avg(64,3)
out2=conv(input)

print("difference:",((out2-out1)**2).sum().item())

3.3.6 Transform VI

from rep.ddb import transVI_conv_scale
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(1,64,7,7)

#conv+conv
conv1x1=nn.Conv2d(64,64,1)
conv1x3=nn.Conv2d(64,64,(1,3),padding=(0,1))
conv3x1=nn.Conv2d(64,64,(3,1),padding=(1,0))
out1=conv1x1(input)+conv1x3(input)+conv3x1(input)

#conv_fuse
conv_fuse=nn.Conv2d(64,64,3,padding=1)
conv_fuse.weight.data,conv_fuse.bias.data=transVI_conv_scale(conv1x1,conv1x3,conv3x1)
out2=conv_fuse(input)

print("difference:",((out2-out1)**2).sum().item())

---

▊ Convolution Series

• Pytorch implementation of "MobileNets: Efficient Convolutional Neural Networks for Mobile Vision Applications---CVPR2017"

• Pytorch implementation of "Efficientnet: Rethinking model scaling for convolutional neural networks---PMLR2019"

• Pytorch implementation of "Involution: Inverting the Inherence of Convolution for Visual Recognition---CVPR2021"

---

1. Depthwise Separable Convolution Usage

1.1. Paper

"MobileNets: Efficient Convolutional Neural Networks for Mobile Vision Applications"

https://arxiv.org/abs/1704.04861

1.2. Overview

1.3. Code

from conv.DepthwiseSeparableConvolution import DepthwiseSeparableConvolution
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(1,3,224,224)
dsconv=DepthwiseSeparableConvolution(3,64)
out=dsconv(input)
print(out.shape)

---

2. MBConv Usage

2.1. Paper

"Efficientnet: Rethinking model scaling for convolutional neural networks"

http://proceedings.mlr.press/v97/tan19a.html

2.2. Overview

2.3. Code

from conv.MBConv import MBConvBlock
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(1,3,224,224)
mbconv=MBConvBlock(ksize=3,input_filters=3,output_filters=512,image_size=224)
out=mbconv(input)
print(out.shape)

---

3. Involution Usage

3.1. Paper

"Involution: Inverting the Inherence of Convolution for Visual Recognition"

https://arxiv.org/abs/2103.06255

3.2. Overview

3.3. Code

from conv.Involution import Involution
import torch
from torch import nn
from torch.nn import functional as F

input=torch.randn(1,4,64,64)
involution=Involution(kernel_size=3,in_channel=4,stride=2)
out=involution(input)
print(out.shape)

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