用pytorch写一个一维残差神经网络代码，最好是resnet1d18

好的，我可以回答这个问题。以下是一个使用 PyTorch 实现的一维残差神经网络代码，它是一个 ResNet1D18 模型：

import torch
import torch.nn as nn
import torch.nn.functional as F

class ResNetBlock(nn.Module):
    def __init__(self, in_channels, out_channels, stride=1):
        super(ResNetBlock, self).__init__()
        self.conv1 = nn.Conv1d(in_channels, out_channels, kernel_size=3, stride=stride, padding=1, bias=False)
        self.bn1 = nn.BatchNorm1d(out_channels)
        self.conv2 = nn.Conv1d(out_channels, out_channels, kernel_size=3, stride=1, padding=1, bias=False)
        self.bn2 = nn.BatchNorm1d(out_channels)
        self.shortcut = nn.Sequential()
        if stride != 1 or in_channels != out_channels:
            self.shortcut = nn.Sequential(
                nn.Conv1d(in_channels, out_channels, kernel_size=1, stride=stride, bias=False),
                nn.BatchNorm1d(out_channels)
            )

    def forward(self, x):
        out = F.relu(self.bn1(self.conv1(x)))
        out = self.bn2(self.conv2(out))
        out += self.shortcut(x)
        out = F.relu(out)
        return out

class ResNet1D18(nn.Module):
    def __init__(self, num_classes=10):
        super(ResNet1D18, self).__init__()
        self.in_channels = 64
        self.conv1 = nn.Conv1d(1, 64, kernel_size=7, stride=2, padding=3, bias=False)
        self.bn1 = nn.BatchNorm1d(64)
        self.layer1 = self._make_layer(ResNetBlock, 64, 2, stride=1)
        self.layer2 = self._make_layer(ResNetBlock, 128, 2, stride=2)
        self.layer3 = self._make_layer(ResNetBlock, 256, 2, stride=2)
        self.layer4 = self._make_layer(ResNetBlock, 512, 2, stride=2)
        self.avgpool = nn.AdaptiveAvgPool1d(1)
        self.fc = nn.Linear(512, num_classes)

    def _make_layer(self, block, out_channels, num_blocks, stride):
        strides = [stride] + [1] * (num_blocks - 1)
        layers = []
        for stride in strides:
            layers.append(block(self.in_channels, out_channels, stride))
            self.in_channels = out_channels
        return nn.Sequential(*layers)

    def forward(self, x):
        out = F.relu(self.bn1(self.conv1(x)))
        out = F.max_pool1d(out, kernel_size=3, stride=2, padding=1)
        out = self.layer1(out)
        out = self.layer2(out)
        out = self.layer3(out)
        out = self.layer4(out)
        out = self.avgpool(out)
        out = out.view(out.size(), -1)
        out = self.fc(out)
        return out

这个模型包含了 ResNetBlock 和 ResNet1D18 两个类，其中 ResNetBlock 是残差块，ResNet1D18 是一个包含多个残差块的一维残差神经网络。你可以使用这个代码来训练一个 ResNet1D18 模型来解决你的问题。