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class Mlp(nn.Module):
def __init__(self, in_features, hidden_features=None, out_features=None, act_layer=nn.GELU, drop=0.0):
super().__init__()
out_features = (out_features or in_features)
hidden_features = (hidden_features or in_features)
self.fc1 = nn.Linear(in_features, hidden_... |
class Attention(nn.Module):
def __init__(self, dim, num_heads=8, qkv_bias=False, qk_scale=None, attn_drop=0.0, proj_drop=0.0, sr_ratio=1):
super().__init__()
assert ((dim % num_heads) == 0), f'dim {dim} should be divided by num_heads {num_heads}.'
self.dim = dim
self.num_heads = n... |
class Block(nn.Module):
def __init__(self, dim, num_heads, mlp_ratio=4.0, qkv_bias=False, qk_scale=None, drop=0.0, attn_drop=0.0, drop_path=0.0, act_layer=nn.GELU, norm_layer=nn.LayerNorm, sr_ratio=1):
super().__init__()
self.norm1 = norm_layer(dim)
self.attn = Attention(dim, num_heads=nu... |
class OverlapPatchEmbed(nn.Module):
' Image to Patch Embedding\n '
def __init__(self, img_size=224, patch_size=7, stride=4, in_chans=3, embed_dim=768):
super().__init__()
img_size = to_2tuple(img_size)
patch_size = to_2tuple(patch_size)
self.img_size = img_size
self... |
class MixVisionTransformer(nn.Module):
def __init__(self, img_size=224, patch_size=16, in_chans=3, num_classes=1000, embed_dims=[64, 128, 256, 512], num_heads=[1, 2, 4, 8], mlp_ratios=[4, 4, 4, 4], qkv_bias=False, qk_scale=None, drop_rate=0.0, attn_drop_rate=0.0, drop_path_rate=0.0, norm_layer=nn.LayerNorm, dept... |
class DWConv(nn.Module):
def __init__(self, dim=768):
super(DWConv, self).__init__()
self.dwconv = nn.Conv2d(dim, dim, 3, 1, 1, bias=True, groups=dim)
def forward(self, x, H, W):
(B, N, C) = x.shape
x = x.transpose(1, 2).view(B, C, H, W)
x = self.dwconv(x)
x =... |
class mit_b0(MixVisionTransformer):
def __init__(self, stride=None, **kwargs):
super(mit_b0, self).__init__(patch_size=4, embed_dims=[32, 64, 160, 256], num_heads=[1, 2, 5, 8], mlp_ratios=[4, 4, 4, 4], qkv_bias=True, norm_layer=partial(nn.LayerNorm, eps=1e-06), depths=[2, 2, 2, 2], sr_ratios=[8, 4, 2, 1]... |
class mit_b1(MixVisionTransformer):
def __init__(self, stride=None, **kwargs):
super(mit_b1, self).__init__(patch_size=4, embed_dims=[64, 128, 320, 512], num_heads=[1, 2, 5, 8], mlp_ratios=[4, 4, 4, 4], qkv_bias=True, norm_layer=partial(nn.LayerNorm, eps=1e-06), depths=[2, 2, 2, 2], sr_ratios=[8, 4, 2, 1... |
class mit_b2(MixVisionTransformer):
def __init__(self, stride=None, **kwargs):
super(mit_b2, self).__init__(patch_size=4, embed_dims=[64, 128, 320, 512], num_heads=[1, 2, 5, 8], mlp_ratios=[4, 4, 4, 4], qkv_bias=True, norm_layer=partial(nn.LayerNorm, eps=1e-06), depths=[3, 4, 6, 3], sr_ratios=[8, 4, 2, 1... |
class mit_b3(MixVisionTransformer):
def __init__(self, stride=None, **kwargs):
super(mit_b3, self).__init__(patch_size=4, embed_dims=[64, 128, 320, 512], num_heads=[1, 2, 5, 8], mlp_ratios=[4, 4, 4, 4], qkv_bias=True, norm_layer=partial(nn.LayerNorm, eps=1e-06), depths=[3, 4, 18, 3], sr_ratios=[8, 4, 2, ... |
class mit_b4(MixVisionTransformer):
def __init__(self, stride=None, **kwargs):
super(mit_b4, self).__init__(patch_size=4, embed_dims=[64, 128, 320, 512], num_heads=[1, 2, 5, 8], mlp_ratios=[4, 4, 4, 4], qkv_bias=True, norm_layer=partial(nn.LayerNorm, eps=1e-06), depths=[3, 8, 27, 3], sr_ratios=[8, 4, 2, ... |
class mit_b5(MixVisionTransformer):
def __init__(self, stride=None, **kwargs):
super(mit_b5, self).__init__(patch_size=4, embed_dims=[64, 128, 320, 512], num_heads=[1, 2, 5, 8], mlp_ratios=[4, 4, 4, 4], qkv_bias=True, norm_layer=partial(nn.LayerNorm, eps=1e-06), depths=[3, 6, 40, 3], sr_ratios=[8, 4, 2, ... |
class WeTr(nn.Module):
def __init__(self, backbone, num_classes=None, embedding_dim=256, stride=None, pretrained=None, pooling=None):
super().__init__()
self.num_classes = num_classes
self.embedding_dim = embedding_dim
self.feature_strides = [4, 8, 16, 32]
self.stride = st... |
class MLP(nn.Module):
'\n Linear Embedding\n '
def __init__(self, input_dim=2048, embed_dim=768):
super().__init__()
self.proj = nn.Linear(input_dim, embed_dim)
def forward(self, x):
x = x.flatten(2).transpose(1, 2)
x = self.proj(x)
return x
|
class SegFormerHead(nn.Module):
'\n SegFormer: Simple and Efficient Design for Semantic Segmentation with Transformers\n '
def __init__(self, feature_strides=None, in_channels=128, embedding_dim=256, num_classes=20, **kwargs):
super(SegFormerHead, self).__init__()
self.in_channels = in_... |
class Bottleneck(nn.Module):
def __init__(self, in_planes, growth_rate):
super(Bottleneck, self).__init__()
self.bn1 = nn.BatchNorm2d(in_planes)
self.conv1 = nn.Conv2d(in_planes, (4 * growth_rate), kernel_size=1, bias=False)
self.bn2 = nn.BatchNorm2d((4 * growth_rate))
sel... |
class Transition(nn.Module):
def __init__(self, in_planes, out_planes):
super(Transition, self).__init__()
self.bn = nn.BatchNorm2d(in_planes)
self.conv = nn.Conv2d(in_planes, out_planes, kernel_size=1, bias=False)
def forward(self, x):
out = self.conv(F.relu(self.bn(x)))
... |
class DenseNet(nn.Module):
def __init__(self, block, nblocks, growth_rate=12, reduction=0.5, num_classes=10):
super(DenseNet, self).__init__()
self.growth_rate = growth_rate
num_planes = (2 * growth_rate)
self.conv1 = nn.Conv2d(3, num_planes, kernel_size=3, padding=1, bias=False)
... |
def DenseNet121():
return DenseNet(Bottleneck, [6, 12, 24, 16], growth_rate=32)
|
def DenseNet169():
return DenseNet(Bottleneck, [6, 12, 32, 32], growth_rate=32)
|
def DenseNet201():
return DenseNet(Bottleneck, [6, 12, 48, 32], growth_rate=32)
|
def DenseNet161():
return DenseNet(Bottleneck, [6, 12, 36, 24], growth_rate=48)
|
def densenet_cifar():
return DenseNet(Bottleneck, [6, 12, 24, 16], growth_rate=12)
|
def test():
net = densenet_cifar()
x = torch.randn(1, 3, 32, 32)
y = net(x)
print(y)
|
class BasicBlock(nn.Module):
expansion = 1
def __init__(self, in_planes, planes, stride=1):
super(BasicBlock, self).__init__()
self.conv1 = nn.Conv2d(in_planes, planes, kernel_size=3, stride=stride, padding=1, bias=False)
self.bn1 = nn.BatchNorm2d(planes)
self.conv2 = nn.Conv2... |
class Root(nn.Module):
def __init__(self, in_channels, out_channels, kernel_size=1):
super(Root, self).__init__()
self.conv = nn.Conv2d(in_channels, out_channels, kernel_size, stride=1, padding=((kernel_size - 1) // 2), bias=False)
self.bn = nn.BatchNorm2d(out_channels)
def forward(s... |
class Tree(nn.Module):
def __init__(self, block, in_channels, out_channels, level=1, stride=1):
super(Tree, self).__init__()
self.level = level
if (level == 1):
self.root = Root((2 * out_channels), out_channels)
self.left_node = block(in_channels, out_channels, str... |
class DLA(nn.Module):
def __init__(self, block=BasicBlock, num_classes=10):
super(DLA, self).__init__()
self.base = nn.Sequential(nn.Conv2d(3, 16, kernel_size=3, stride=1, padding=1, bias=False), nn.BatchNorm2d(16), nn.ReLU(True))
self.layer1 = nn.Sequential(nn.Conv2d(16, 16, kernel_size=... |
def test():
net = DLA()
print(net)
x = torch.randn(1, 3, 32, 32)
y = net(x)
print(y.size())
|
class BasicBlock(nn.Module):
expansion = 1
def __init__(self, in_planes, planes, stride=1):
super(BasicBlock, self).__init__()
self.conv1 = nn.Conv2d(in_planes, planes, kernel_size=3, stride=stride, padding=1, bias=False)
self.bn1 = nn.BatchNorm2d(planes)
self.conv2 = nn.Conv2... |
class Root(nn.Module):
def __init__(self, in_channels, out_channels, kernel_size=1):
super(Root, self).__init__()
self.conv = nn.Conv2d(in_channels, out_channels, kernel_size, stride=1, padding=((kernel_size - 1) // 2), bias=False)
self.bn = nn.BatchNorm2d(out_channels)
def forward(s... |
class Tree(nn.Module):
def __init__(self, block, in_channels, out_channels, level=1, stride=1):
super(Tree, self).__init__()
self.root = Root((2 * out_channels), out_channels)
if (level == 1):
self.left_tree = block(in_channels, out_channels, stride=stride)
self.ri... |
class SimpleDLA(nn.Module):
def __init__(self, block=BasicBlock, num_classes=10):
super(SimpleDLA, self).__init__()
self.base = nn.Sequential(nn.Conv2d(3, 16, kernel_size=3, stride=1, padding=1, bias=False), nn.BatchNorm2d(16), nn.ReLU(True))
self.layer1 = nn.Sequential(nn.Conv2d(16, 16, ... |
def test():
net = SimpleDLA()
print(net)
x = torch.randn(1, 3, 32, 32)
y = net(x)
print(y.size())
|
def swish(x):
return (x * x.sigmoid())
|
def drop_connect(x, drop_ratio):
keep_ratio = (1.0 - drop_ratio)
mask = torch.empty([x.shape[0], 1, 1, 1], dtype=x.dtype, device=x.device)
mask.bernoulli_(keep_ratio)
x.div_(keep_ratio)
x.mul_(mask)
return x
|
class SE(nn.Module):
'Squeeze-and-Excitation block with Swish.'
def __init__(self, in_channels, se_channels):
super(SE, self).__init__()
self.se1 = nn.Conv2d(in_channels, se_channels, kernel_size=1, bias=True)
self.se2 = nn.Conv2d(se_channels, in_channels, kernel_size=1, bias=True)
... |
class Block(nn.Module):
'expansion + depthwise + pointwise + squeeze-excitation'
def __init__(self, in_channels, out_channels, kernel_size, stride, expand_ratio=1, se_ratio=0.0, drop_rate=0.0):
super(Block, self).__init__()
self.stride = stride
self.drop_rate = drop_rate
self.... |
class EfficientNet(nn.Module):
def __init__(self, cfg, num_classes=1000):
super(EfficientNet, self).__init__()
self.cfg = cfg
self.conv1 = nn.Conv2d(3, 32, kernel_size=3, stride=1, padding=1, bias=False)
self.bn1 = nn.BatchNorm2d(32)
self.layers = self._make_layers(in_chan... |
def EfficientNetB0():
cfg = {'num_blocks': [1, 2, 2, 3, 3, 4, 1], 'expansion': [1, 6, 6, 6, 6, 6, 6], 'out_channels': [16, 24, 40, 80, 112, 192, 320], 'kernel_size': [3, 3, 5, 3, 5, 5, 3], 'stride': [1, 2, 2, 2, 1, 2, 1], 'dropout_rate': 0.2, 'drop_connect_rate': 0.2}
return EfficientNet(cfg)
|
def test():
net = EfficientNetB0()
x = torch.randn(2, 3, 32, 32)
y = net(x)
print(y.shape)
|
class Inception(nn.Module):
def __init__(self, in_planes, n1x1, n3x3red, n3x3, n5x5red, n5x5, pool_planes):
super(Inception, self).__init__()
self.b1 = nn.Sequential(nn.Conv2d(in_planes, n1x1, kernel_size=1), nn.BatchNorm2d(n1x1), nn.ReLU(True))
self.b2 = nn.Sequential(nn.Conv2d(in_planes... |
class GoogLeNet(nn.Module):
def __init__(self):
super(GoogLeNet, self).__init__()
self.pre_layers = nn.Sequential(nn.Conv2d(3, 192, kernel_size=3, padding=1), nn.BatchNorm2d(192), nn.ReLU(True))
self.a3 = Inception(192, 64, 96, 128, 16, 32, 32)
self.b3 = Inception(256, 128, 128, 1... |
def test():
net = GoogLeNet()
x = torch.randn(1, 3, 32, 32)
y = net(x)
print(y.size())
|
class LeNet(nn.Module):
def __init__(self):
super(LeNet, self).__init__()
self.conv1 = nn.Conv2d(3, 6, 5)
self.conv2 = nn.Conv2d(6, 16, 5)
self.fc1 = nn.Linear(((16 * 5) * 5), 120)
self.fc2 = nn.Linear(120, 84)
self.fc3 = nn.Linear(84, 10)
def forward(self, x)... |
class Block(nn.Module):
'Depthwise conv + Pointwise conv'
def __init__(self, in_planes, out_planes, stride=1):
super(Block, self).__init__()
self.conv1 = nn.Conv2d(in_planes, in_planes, kernel_size=3, stride=stride, padding=1, groups=in_planes, bias=False)
self.bn1 = nn.BatchNorm2d(in... |
class MobileNet(nn.Module):
cfg = [64, (128, 2), 128, (256, 2), 256, (512, 2), 512, 512, 512, 512, 512, (1024, 2), 1024]
def __init__(self, num_classes=10):
super(MobileNet, self).__init__()
self.conv1 = nn.Conv2d(3, 32, kernel_size=3, stride=1, padding=1, bias=False)
self.bn1 = nn.Ba... |
def test():
net = MobileNet()
x = torch.randn(1, 3, 32, 32)
y = net(x)
print(y.size())
|
class Block(nn.Module):
'expand + depthwise + pointwise'
def __init__(self, in_planes, out_planes, expansion, stride):
super(Block, self).__init__()
self.stride = stride
planes = (expansion * in_planes)
self.conv1 = nn.Conv2d(in_planes, planes, kernel_size=1, stride=1, padding... |
class MobileNetV2(nn.Module):
cfg = [(1, 16, 1, 1), (6, 24, 2, 1), (6, 32, 3, 2), (6, 64, 4, 2), (6, 96, 3, 1), (6, 160, 3, 2), (6, 320, 1, 1)]
def __init__(self, num_classes=10):
super(MobileNetV2, self).__init__()
self.conv1 = nn.Conv2d(3, 32, kernel_size=3, stride=1, padding=1, bias=False)... |
def test():
net = MobileNetV2()
x = torch.randn(2, 3, 32, 32)
y = net(x)
print(y.size())
|
class SepConv(nn.Module):
'Separable Convolution.'
def __init__(self, in_planes, out_planes, kernel_size, stride):
super(SepConv, self).__init__()
self.conv1 = nn.Conv2d(in_planes, out_planes, kernel_size, stride, padding=((kernel_size - 1) // 2), bias=False, groups=in_planes)
self.bn... |
class CellA(nn.Module):
def __init__(self, in_planes, out_planes, stride=1):
super(CellA, self).__init__()
self.stride = stride
self.sep_conv1 = SepConv(in_planes, out_planes, kernel_size=7, stride=stride)
if (stride == 2):
self.conv1 = nn.Conv2d(in_planes, out_planes,... |
class CellB(nn.Module):
def __init__(self, in_planes, out_planes, stride=1):
super(CellB, self).__init__()
self.stride = stride
self.sep_conv1 = SepConv(in_planes, out_planes, kernel_size=7, stride=stride)
self.sep_conv2 = SepConv(in_planes, out_planes, kernel_size=3, stride=strid... |
class PNASNet(nn.Module):
def __init__(self, cell_type, num_cells, num_planes):
super(PNASNet, self).__init__()
self.in_planes = num_planes
self.cell_type = cell_type
self.conv1 = nn.Conv2d(3, num_planes, kernel_size=3, stride=1, padding=1, bias=False)
self.bn1 = nn.BatchN... |
def PNASNetA():
return PNASNet(CellA, num_cells=6, num_planes=44)
|
def PNASNetB():
return PNASNet(CellB, num_cells=6, num_planes=32)
|
def test():
net = PNASNetB()
x = torch.randn(1, 3, 32, 32)
y = net(x)
print(y)
|
class PreActBlock(nn.Module):
'Pre-activation version of the BasicBlock.'
expansion = 1
def __init__(self, in_planes, planes, stride=1):
super(PreActBlock, self).__init__()
self.bn1 = nn.BatchNorm2d(in_planes)
self.conv1 = nn.Conv2d(in_planes, planes, kernel_size=3, stride=stride,... |
class PreActBottleneck(nn.Module):
'Pre-activation version of the original Bottleneck module.'
expansion = 4
def __init__(self, in_planes, planes, stride=1):
super(PreActBottleneck, self).__init__()
self.bn1 = nn.BatchNorm2d(in_planes)
self.conv1 = nn.Conv2d(in_planes, planes, ker... |
class PreActResNet(nn.Module):
def __init__(self, block, num_blocks, num_classes=10):
super(PreActResNet, self).__init__()
self.in_planes = 64
self.conv1 = nn.Conv2d(3, 64, kernel_size=3, stride=1, padding=1, bias=False)
self.layer1 = self._make_layer(block, 64, num_blocks[0], str... |
def PreActResNet18():
return PreActResNet(PreActBlock, [2, 2, 2, 2])
|
def PreActResNet34():
return PreActResNet(PreActBlock, [3, 4, 6, 3])
|
def PreActResNet50():
return PreActResNet(PreActBottleneck, [3, 4, 6, 3])
|
def PreActResNet101():
return PreActResNet(PreActBottleneck, [3, 4, 23, 3])
|
def PreActResNet152():
return PreActResNet(PreActBottleneck, [3, 8, 36, 3])
|
def test():
net = PreActResNet18()
y = net(torch.randn(1, 3, 32, 32))
print(y.size())
|
class SE(nn.Module):
'Squeeze-and-Excitation block.'
def __init__(self, in_planes, se_planes):
super(SE, self).__init__()
self.se1 = nn.Conv2d(in_planes, se_planes, kernel_size=1, bias=True)
self.se2 = nn.Conv2d(se_planes, in_planes, kernel_size=1, bias=True)
def forward(self, x)... |
class Block(nn.Module):
def __init__(self, w_in, w_out, stride, group_width, bottleneck_ratio, se_ratio):
super(Block, self).__init__()
w_b = int(round((w_out * bottleneck_ratio)))
self.conv1 = nn.Conv2d(w_in, w_b, kernel_size=1, bias=False)
self.bn1 = nn.BatchNorm2d(w_b)
... |
class RegNet(nn.Module):
def __init__(self, cfg, num_classes=10):
super(RegNet, self).__init__()
self.cfg = cfg
self.in_planes = 64
self.conv1 = nn.Conv2d(3, 64, kernel_size=3, stride=1, padding=1, bias=False)
self.bn1 = nn.BatchNorm2d(64)
self.layer1 = self._make_... |
def RegNetX_200MF():
cfg = {'depths': [1, 1, 4, 7], 'widths': [24, 56, 152, 368], 'strides': [1, 1, 2, 2], 'group_width': 8, 'bottleneck_ratio': 1, 'se_ratio': 0}
return RegNet(cfg)
|
def RegNetX_400MF():
cfg = {'depths': [1, 2, 7, 12], 'widths': [32, 64, 160, 384], 'strides': [1, 1, 2, 2], 'group_width': 16, 'bottleneck_ratio': 1, 'se_ratio': 0}
return RegNet(cfg)
|
def RegNetY_400MF():
cfg = {'depths': [1, 2, 7, 12], 'widths': [32, 64, 160, 384], 'strides': [1, 1, 2, 2], 'group_width': 16, 'bottleneck_ratio': 1, 'se_ratio': 0.25}
return RegNet(cfg)
|
def test():
net = RegNetX_200MF()
print(net)
x = torch.randn(2, 3, 32, 32)
y = net(x)
print(y.shape)
|
class BasicBlock(nn.Module):
expansion = 1
def __init__(self, in_planes, planes, stride=1):
super(BasicBlock, self).__init__()
self.conv1 = nn.Conv2d(in_planes, planes, kernel_size=3, stride=stride, padding=1, bias=False)
self.bn1 = nn.BatchNorm2d(planes)
self.conv2 = nn.Conv2... |
class Bottleneck(nn.Module):
expansion = 4
def __init__(self, in_planes, planes, stride=1):
super(Bottleneck, self).__init__()
self.conv1 = nn.Conv2d(in_planes, planes, kernel_size=1, bias=False)
self.bn1 = nn.BatchNorm2d(planes)
self.conv2 = nn.Conv2d(planes, planes, kernel_s... |
class ResNet(nn.Module):
def __init__(self, block, num_blocks, num_classes=10):
super(ResNet, self).__init__()
self.in_planes = 64
self.conv1 = nn.Conv2d(3, 64, kernel_size=3, stride=1, padding=1, bias=False)
self.bn1 = nn.BatchNorm2d(64)
self.layer1 = self._make_layer(blo... |
def ResNet18():
return ResNet(BasicBlock, [2, 2, 2, 2])
|
def ResNet18_11():
return ResNet(BasicBlock, [2, 2, 2, 2], num_classes=11)
|
def ResNet18_201():
return ResNet(BasicBlock, [2, 2, 2, 2], num_classes=201)
|
def ResNet34():
return ResNet(BasicBlock, [3, 4, 6, 3])
|
def ResNet50():
return ResNet(Bottleneck, [3, 4, 6, 3])
|
def ResNet101():
return ResNet(Bottleneck, [3, 4, 23, 3])
|
def ResNet152():
return ResNet(Bottleneck, [3, 8, 36, 3])
|
def test():
net = ResNet18()
y = net(torch.randn(1, 3, 32, 32))
print(y.size())
|
class Block(nn.Module):
'Grouped convolution block.'
expansion = 2
def __init__(self, in_planes, cardinality=32, bottleneck_width=4, stride=1):
super(Block, self).__init__()
group_width = (cardinality * bottleneck_width)
self.conv1 = nn.Conv2d(in_planes, group_width, kernel_size=1... |
class ResNeXt(nn.Module):
def __init__(self, num_blocks, cardinality, bottleneck_width, num_classes=10):
super(ResNeXt, self).__init__()
self.cardinality = cardinality
self.bottleneck_width = bottleneck_width
self.in_planes = 64
self.conv1 = nn.Conv2d(3, 64, kernel_size=1,... |
def ResNeXt29_2x64d():
return ResNeXt(num_blocks=[3, 3, 3], cardinality=2, bottleneck_width=64)
|
def ResNeXt29_4x64d():
return ResNeXt(num_blocks=[3, 3, 3], cardinality=4, bottleneck_width=64)
|
def ResNeXt29_8x64d():
return ResNeXt(num_blocks=[3, 3, 3], cardinality=8, bottleneck_width=64)
|
def ResNeXt29_32x4d():
return ResNeXt(num_blocks=[3, 3, 3], cardinality=32, bottleneck_width=4)
|
def test_resnext():
net = ResNeXt29_2x64d()
x = torch.randn(1, 3, 32, 32)
y = net(x)
print(y.size())
|
class BasicBlock(nn.Module):
def __init__(self, in_planes, planes, stride=1):
super(BasicBlock, self).__init__()
self.conv1 = nn.Conv2d(in_planes, planes, kernel_size=3, stride=stride, padding=1, bias=False)
self.bn1 = nn.BatchNorm2d(planes)
self.conv2 = nn.Conv2d(planes, planes, ... |
class PreActBlock(nn.Module):
def __init__(self, in_planes, planes, stride=1):
super(PreActBlock, self).__init__()
self.bn1 = nn.BatchNorm2d(in_planes)
self.conv1 = nn.Conv2d(in_planes, planes, kernel_size=3, stride=stride, padding=1, bias=False)
self.bn2 = nn.BatchNorm2d(planes)
... |
class SENet(nn.Module):
def __init__(self, block, num_blocks, num_classes=10):
super(SENet, self).__init__()
self.in_planes = 64
self.conv1 = nn.Conv2d(3, 64, kernel_size=3, stride=1, padding=1, bias=False)
self.bn1 = nn.BatchNorm2d(64)
self.layer1 = self._make_layer(block... |
def SENet18():
return SENet(PreActBlock, [2, 2, 2, 2])
|
def test():
net = SENet18()
y = net(torch.randn(1, 3, 32, 32))
print(y.size())
|
class ShuffleBlock(nn.Module):
def __init__(self, groups):
super(ShuffleBlock, self).__init__()
self.groups = groups
def forward(self, x):
'Channel shuffle: [N,C,H,W] -> [N,g,C/g,H,W] -> [N,C/g,g,H,w] -> [N,C,H,W]'
(N, C, H, W) = x.size()
g = self.groups
retur... |
class Bottleneck(nn.Module):
def __init__(self, in_planes, out_planes, stride, groups):
super(Bottleneck, self).__init__()
self.stride = stride
mid_planes = (out_planes / 4)
g = (1 if (in_planes == 24) else groups)
self.conv1 = nn.Conv2d(in_planes, mid_planes, kernel_size=... |
class ShuffleNet(nn.Module):
def __init__(self, cfg):
super(ShuffleNet, self).__init__()
out_planes = cfg['out_planes']
num_blocks = cfg['num_blocks']
groups = cfg['groups']
self.conv1 = nn.Conv2d(3, 24, kernel_size=1, bias=False)
self.bn1 = nn.BatchNorm2d(24)
... |
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