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modules.resnet.EncoderNet1d

Class · nn.Module · Source

net = mdnc.modules.resnet.EncoderNet1d(
    channel, layers, block='bottleneck',
    kernel_size=3, in_planes=1, out_length=2
)

This moule is a built-in model for 1D residual encoder network. This network could be used as a part of the auto-encoder, or just a network for down-sampling data.

The network would down-sample the input data according to the network depth. The depth is given by the length of the argument layers. The network structure is shown in the following chart:

flowchart TB
    b1["Block 1<br>Stack of layers[0] blocks"]
    b2["Block 2<br>Stack of layers[1] blocks"]
    bi["Block ...<br>Stack of ... blocks"]
    bn["Block n<br>Stack of layers[n-1] blocks"]
    optional:::blockoptional
    subgraph optional [Optional]
       fc["FC layer"]
    end
    b1 -->|down<br>sampling| b2 -->|down<br>sampling| bi -->|down<br>sampling| bn
    bn -.->|flatten| fc
    linkStyle 0,1,2 stroke-width:4px, stroke:#800 ;
    classDef blockoptional fill:none, stroke-dasharray:10,10, stroke:#9370DB, width:100;

The argument layers is a sequence of int. For each block \(i\), it contains layers[i-1] repeated residual blocks (see mdnc.modules.resnet.BlockPlain1d and mdnc.modules.resnet.BlockBottleneck1d). Each down-sampling or up-sampling is configured by stride=2. The channel number would be doubled in the down-sampling route. An optional flattener and fully-connected layer could be appended to the last layer when the argument out_length != None.

Arguments

Requries

Argument Type Description
channel int The channel number of the first hidden block (layer). After each down-sampling, the channel number would be doubled.
layers (int,) A sequence of layer numbers for each block. Each number represents the number of residual blocks of a stage (block). The stage numer, i.e. the depth of the network is the length of this list.
block str The residual block type, could be:
kernel_size int The kernel size of each residual block.
in_planes int The channel number of the input data.
out_length int The length of the output vector, if not set, the output would not be flattened.

Operators

__call__

y = net(x)

The forward operator implemented by the forward() method. The input is a 1D tensor, and the output is the final output of this network.

Requries

Argument Type Description
x torch.Tensor A 1D tensor, the size should be (B, C, L), where B is the batch size, C is the input channel number, and L is the input data length.

Returns

Argument Description
y A tensor,
  • When out_length is None: the size should be (B, L), where B is the batch size, and L is out_length.
  • When out_length != None: the size should be (B, C, L), where B is the batch size, C and L are the channel number and the length of the last output stage (block) respectively.

Properties

nlayers

net.nlayers

The total number of convolutional layers along the depth of the network. This value would not take the fully-connected layer into consideration.

Examples

Example 1
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import mdnc

net = mdnc.modules.resnet.EncoderNet1d(64, [2, 2, 2, 2, 2], in_planes=3, out_length=32)
print('The number of convolutional layers along the depth is {0}.'.format(net.nlayers))
mdnc.contribs.torchsummary.summary(net, (3, 128), device='cpu')
The number of convolutional layers along the depth is 32.
----------------------------------------------------------------
        Layer (type)               Output Shape         Param #
================================================================
            Conv1d-1              [-1, 64, 128]             960
    InstanceNorm1d-2              [-1, 64, 128]             128
             PReLU-3              [-1, 64, 128]              64
            Conv1d-4              [-1, 64, 128]           4,096
    InstanceNorm1d-5              [-1, 64, 128]             128
             PReLU-6              [-1, 64, 128]              64
            Conv1d-7              [-1, 64, 128]          12,288
    InstanceNorm1d-8              [-1, 64, 128]             128
             PReLU-9              [-1, 64, 128]              64
           Conv1d-10              [-1, 64, 128]           4,096
_BlockBo...neckNd-11              [-1, 64, 128]               0
   InstanceNorm1d-12              [-1, 64, 128]             128
            PReLU-13              [-1, 64, 128]              64
           Conv1d-14              [-1, 64, 128]           4,096
   InstanceNorm1d-15              [-1, 64, 128]             128
            PReLU-16              [-1, 64, 128]              64
           Conv1d-17               [-1, 64, 64]          12,288
   InstanceNorm1d-18               [-1, 64, 64]             128
            PReLU-19               [-1, 64, 64]              64
           Conv1d-20               [-1, 64, 64]           4,096
           Conv1d-21               [-1, 64, 64]           4,096
   InstanceNorm1d-22               [-1, 64, 64]             128
_BlockBo...neckNd-23               [-1, 64, 64]               0
   _BlockResStkNd-24               [-1, 64, 64]               0
   InstanceNorm1d-25               [-1, 64, 64]             128
            PReLU-26               [-1, 64, 64]              64
           Conv1d-27               [-1, 64, 64]           4,096
   InstanceNorm1d-28               [-1, 64, 64]             128
            PReLU-29               [-1, 64, 64]              64
           Conv1d-30               [-1, 64, 64]          12,288
   InstanceNorm1d-31               [-1, 64, 64]             128
            PReLU-32               [-1, 64, 64]              64
           Conv1d-33              [-1, 128, 64]           8,192
           Conv1d-34              [-1, 128, 64]           8,192
   InstanceNorm1d-35              [-1, 128, 64]             256
_BlockBo...neckNd-36              [-1, 128, 64]               0
   InstanceNorm1d-37              [-1, 128, 64]             256
            PReLU-38              [-1, 128, 64]             128
           Conv1d-39              [-1, 128, 64]          16,384
   InstanceNorm1d-40              [-1, 128, 64]             256
            PReLU-41              [-1, 128, 64]             128
           Conv1d-42              [-1, 128, 32]          49,152
   InstanceNorm1d-43              [-1, 128, 32]             256
            PReLU-44              [-1, 128, 32]             128
           Conv1d-45              [-1, 128, 32]          16,384
           Conv1d-46              [-1, 128, 32]          16,384
   InstanceNorm1d-47              [-1, 128, 32]             256
_BlockBo...neckNd-48              [-1, 128, 32]               0
   _BlockResStkNd-49              [-1, 128, 32]               0
   InstanceNorm1d-50              [-1, 128, 32]             256
            PReLU-51              [-1, 128, 32]             128
           Conv1d-52              [-1, 128, 32]          16,384
   InstanceNorm1d-53              [-1, 128, 32]             256
            PReLU-54              [-1, 128, 32]             128
           Conv1d-55              [-1, 128, 32]          49,152
   InstanceNorm1d-56              [-1, 128, 32]             256
            PReLU-57              [-1, 128, 32]             128
           Conv1d-58              [-1, 256, 32]          32,768
           Conv1d-59              [-1, 256, 32]          32,768
   InstanceNorm1d-60              [-1, 256, 32]             512
_BlockBo...neckNd-61              [-1, 256, 32]               0
   InstanceNorm1d-62              [-1, 256, 32]             512
            PReLU-63              [-1, 256, 32]             256
           Conv1d-64              [-1, 256, 32]          65,536
   InstanceNorm1d-65              [-1, 256, 32]             512
            PReLU-66              [-1, 256, 32]             256
           Conv1d-67              [-1, 256, 16]         196,608
   InstanceNorm1d-68              [-1, 256, 16]             512
            PReLU-69              [-1, 256, 16]             256
           Conv1d-70              [-1, 256, 16]          65,536
           Conv1d-71              [-1, 256, 16]          65,536
   InstanceNorm1d-72              [-1, 256, 16]             512
_BlockBo...neckNd-73              [-1, 256, 16]               0
   _BlockResStkNd-74              [-1, 256, 16]               0
   InstanceNorm1d-75              [-1, 256, 16]             512
            PReLU-76              [-1, 256, 16]             256
           Conv1d-77              [-1, 256, 16]          65,536
   InstanceNorm1d-78              [-1, 256, 16]             512
            PReLU-79              [-1, 256, 16]             256
           Conv1d-80              [-1, 256, 16]         196,608
   InstanceNorm1d-81              [-1, 256, 16]             512
            PReLU-82              [-1, 256, 16]             256
           Conv1d-83              [-1, 512, 16]         131,072
           Conv1d-84              [-1, 512, 16]         131,072
   InstanceNorm1d-85              [-1, 512, 16]           1,024
_BlockBo...neckNd-86              [-1, 512, 16]               0
   InstanceNorm1d-87              [-1, 512, 16]           1,024
            PReLU-88              [-1, 512, 16]             512
           Conv1d-89              [-1, 512, 16]         262,144
   InstanceNorm1d-90              [-1, 512, 16]           1,024
            PReLU-91              [-1, 512, 16]             512
           Conv1d-92               [-1, 512, 8]         786,432
   InstanceNorm1d-93               [-1, 512, 8]           1,024
            PReLU-94               [-1, 512, 8]             512
           Conv1d-95               [-1, 512, 8]         262,144
           Conv1d-96               [-1, 512, 8]         262,144
   InstanceNorm1d-97               [-1, 512, 8]           1,024
_BlockBo...neckNd-98               [-1, 512, 8]               0
   _BlockResStkNd-99               [-1, 512, 8]               0
  InstanceNorm1d-100               [-1, 512, 8]           1,024
           PReLU-101               [-1, 512, 8]             512
          Conv1d-102               [-1, 512, 8]         262,144
  InstanceNorm1d-103               [-1, 512, 8]           1,024
           PReLU-104               [-1, 512, 8]             512
          Conv1d-105               [-1, 512, 8]         786,432
  InstanceNorm1d-106               [-1, 512, 8]           1,024
           PReLU-107               [-1, 512, 8]             512
          Conv1d-108              [-1, 1024, 8]         524,288
          Conv1d-109              [-1, 1024, 8]         524,288
  InstanceNorm1d-110              [-1, 1024, 8]           2,048
_BlockBo...eckNd-111              [-1, 1024, 8]               0
  InstanceNorm1d-112              [-1, 1024, 8]           2,048
           PReLU-113              [-1, 1024, 8]           1,024
          Conv1d-114              [-1, 1024, 8]       1,048,576
  InstanceNorm1d-115              [-1, 1024, 8]           2,048
           PReLU-116              [-1, 1024, 8]           1,024
          Conv1d-117              [-1, 1024, 4]       3,145,728
  InstanceNorm1d-118              [-1, 1024, 4]           2,048
           PReLU-119              [-1, 1024, 4]           1,024
          Conv1d-120              [-1, 1024, 4]       1,048,576
          Conv1d-121              [-1, 1024, 4]       1,048,576
  InstanceNorm1d-122              [-1, 1024, 4]           2,048
_BlockBo...eckNd-123              [-1, 1024, 4]               0
  _BlockResStkNd-124              [-1, 1024, 4]               0
          Conv1d-125              [-1, 1024, 4]       3,146,752
Adaptive...ool1d-126              [-1, 1024, 1]               0
          Linear-127                   [-1, 32]          32,800
    EncoderNet1d-128                   [-1, 32]               0
================================================================
Total params: 14,401,568
Trainable params: 14,401,568
Non-trainable params: 0
----------------------------------------------------------------
Input size (MB): 0.00
Forward/backward pass size (MB): 5.54
Params size (MB): 54.94
Estimated Total Size (MB): 60.48
----------------------------------------------------------------
Example 2
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import mdnc

net = mdnc.modules.resnet.EncoderNet1d(64, [2, 2, 2, 2, 2], in_planes=3, out_length=None)
print('The number of convolutional layers along the depth is {0}.'.format(net.nlayers))
mdnc.contribs.torchsummary.summary(net, (3, 128), device='cpu')
The number of convolutional layers along the depth is 32.
----------------------------------------------------------------
        Layer (type)               Output Shape         Param #
================================================================
            Conv1d-1              [-1, 64, 128]             960
    InstanceNorm1d-2              [-1, 64, 128]             128
             PReLU-3              [-1, 64, 128]              64
            Conv1d-4              [-1, 64, 128]           4,096
    InstanceNorm1d-5              [-1, 64, 128]             128
             PReLU-6              [-1, 64, 128]              64
            Conv1d-7              [-1, 64, 128]          12,288
    InstanceNorm1d-8              [-1, 64, 128]             128
             PReLU-9              [-1, 64, 128]              64
           Conv1d-10              [-1, 64, 128]           4,096
_BlockBo...neckNd-11              [-1, 64, 128]               0
   InstanceNorm1d-12              [-1, 64, 128]             128
            PReLU-13              [-1, 64, 128]              64
           Conv1d-14              [-1, 64, 128]           4,096
   InstanceNorm1d-15              [-1, 64, 128]             128
            PReLU-16              [-1, 64, 128]              64
           Conv1d-17               [-1, 64, 64]          12,288
   InstanceNorm1d-18               [-1, 64, 64]             128
            PReLU-19               [-1, 64, 64]              64
           Conv1d-20               [-1, 64, 64]           4,096
           Conv1d-21               [-1, 64, 64]           4,096
   InstanceNorm1d-22               [-1, 64, 64]             128
_BlockBo...neckNd-23               [-1, 64, 64]               0
   _BlockResStkNd-24               [-1, 64, 64]               0
   InstanceNorm1d-25               [-1, 64, 64]             128
            PReLU-26               [-1, 64, 64]              64
           Conv1d-27               [-1, 64, 64]           4,096
   InstanceNorm1d-28               [-1, 64, 64]             128
            PReLU-29               [-1, 64, 64]              64
           Conv1d-30               [-1, 64, 64]          12,288
   InstanceNorm1d-31               [-1, 64, 64]             128
            PReLU-32               [-1, 64, 64]              64
           Conv1d-33              [-1, 128, 64]           8,192
           Conv1d-34              [-1, 128, 64]           8,192
   InstanceNorm1d-35              [-1, 128, 64]             256
_BlockBo...neckNd-36              [-1, 128, 64]               0
   InstanceNorm1d-37              [-1, 128, 64]             256
            PReLU-38              [-1, 128, 64]             128
           Conv1d-39              [-1, 128, 64]          16,384
   InstanceNorm1d-40              [-1, 128, 64]             256
            PReLU-41              [-1, 128, 64]             128
           Conv1d-42              [-1, 128, 32]          49,152
   InstanceNorm1d-43              [-1, 128, 32]             256
            PReLU-44              [-1, 128, 32]             128
           Conv1d-45              [-1, 128, 32]          16,384
           Conv1d-46              [-1, 128, 32]          16,384
   InstanceNorm1d-47              [-1, 128, 32]             256
_BlockBo...neckNd-48              [-1, 128, 32]               0
   _BlockResStkNd-49              [-1, 128, 32]               0
   InstanceNorm1d-50              [-1, 128, 32]             256
            PReLU-51              [-1, 128, 32]             128
           Conv1d-52              [-1, 128, 32]          16,384
   InstanceNorm1d-53              [-1, 128, 32]             256
            PReLU-54              [-1, 128, 32]             128
           Conv1d-55              [-1, 128, 32]          49,152
   InstanceNorm1d-56              [-1, 128, 32]             256
            PReLU-57              [-1, 128, 32]             128
           Conv1d-58              [-1, 256, 32]          32,768
           Conv1d-59              [-1, 256, 32]          32,768
   InstanceNorm1d-60              [-1, 256, 32]             512
_BlockBo...neckNd-61              [-1, 256, 32]               0
   InstanceNorm1d-62              [-1, 256, 32]             512
            PReLU-63              [-1, 256, 32]             256
           Conv1d-64              [-1, 256, 32]          65,536
   InstanceNorm1d-65              [-1, 256, 32]             512
            PReLU-66              [-1, 256, 32]             256
           Conv1d-67              [-1, 256, 16]         196,608
   InstanceNorm1d-68              [-1, 256, 16]             512
            PReLU-69              [-1, 256, 16]             256
           Conv1d-70              [-1, 256, 16]          65,536
           Conv1d-71              [-1, 256, 16]          65,536
   InstanceNorm1d-72              [-1, 256, 16]             512
_BlockBo...neckNd-73              [-1, 256, 16]               0
   _BlockResStkNd-74              [-1, 256, 16]               0
   InstanceNorm1d-75              [-1, 256, 16]             512
            PReLU-76              [-1, 256, 16]             256
           Conv1d-77              [-1, 256, 16]          65,536
   InstanceNorm1d-78              [-1, 256, 16]             512
            PReLU-79              [-1, 256, 16]             256
           Conv1d-80              [-1, 256, 16]         196,608
   InstanceNorm1d-81              [-1, 256, 16]             512
            PReLU-82              [-1, 256, 16]             256
           Conv1d-83              [-1, 512, 16]         131,072
           Conv1d-84              [-1, 512, 16]         131,072
   InstanceNorm1d-85              [-1, 512, 16]           1,024
_BlockBo...neckNd-86              [-1, 512, 16]               0
   InstanceNorm1d-87              [-1, 512, 16]           1,024
            PReLU-88              [-1, 512, 16]             512
           Conv1d-89              [-1, 512, 16]         262,144
   InstanceNorm1d-90              [-1, 512, 16]           1,024
            PReLU-91              [-1, 512, 16]             512
           Conv1d-92               [-1, 512, 8]         786,432
   InstanceNorm1d-93               [-1, 512, 8]           1,024
            PReLU-94               [-1, 512, 8]             512
           Conv1d-95               [-1, 512, 8]         262,144
           Conv1d-96               [-1, 512, 8]         262,144
   InstanceNorm1d-97               [-1, 512, 8]           1,024
_BlockBo...neckNd-98               [-1, 512, 8]               0
   _BlockResStkNd-99               [-1, 512, 8]               0
  InstanceNorm1d-100               [-1, 512, 8]           1,024
           PReLU-101               [-1, 512, 8]             512
          Conv1d-102               [-1, 512, 8]         262,144
  InstanceNorm1d-103               [-1, 512, 8]           1,024
           PReLU-104               [-1, 512, 8]             512
          Conv1d-105               [-1, 512, 8]         786,432
  InstanceNorm1d-106               [-1, 512, 8]           1,024
           PReLU-107               [-1, 512, 8]             512
          Conv1d-108              [-1, 1024, 8]         524,288
          Conv1d-109              [-1, 1024, 8]         524,288
  InstanceNorm1d-110              [-1, 1024, 8]           2,048
_BlockBo...eckNd-111              [-1, 1024, 8]               0
  InstanceNorm1d-112              [-1, 1024, 8]           2,048
           PReLU-113              [-1, 1024, 8]           1,024
          Conv1d-114              [-1, 1024, 8]       1,048,576
  InstanceNorm1d-115              [-1, 1024, 8]           2,048
           PReLU-116              [-1, 1024, 8]           1,024
          Conv1d-117              [-1, 1024, 4]       3,145,728
  InstanceNorm1d-118              [-1, 1024, 4]           2,048
           PReLU-119              [-1, 1024, 4]           1,024
          Conv1d-120              [-1, 1024, 4]       1,048,576
          Conv1d-121              [-1, 1024, 4]       1,048,576
  InstanceNorm1d-122              [-1, 1024, 4]           2,048
_BlockBo...eckNd-123              [-1, 1024, 4]               0
  _BlockResStkNd-124              [-1, 1024, 4]               0
          Conv1d-125              [-1, 1024, 4]       3,146,752
    EncoderNet1d-126              [-1, 1024, 4]               0
================================================================
Total params: 14,368,768
Trainable params: 14,368,768
Non-trainable params: 0
----------------------------------------------------------------
Input size (MB): 0.00
Forward/backward pass size (MB): 5.56
Params size (MB): 54.81
Estimated Total Size (MB): 60.38
----------------------------------------------------------------

Last update: March 14, 2021

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