卷积神经网络 一、torch.nn 1.卷积层 ( nn.Conv2d) 2.池化层( nn.MaxPool2d) 二、先从torch.nn.functional中探索conv2d conv2d的图片简介过程 一、torch.nn 1.卷积层 ( nn.Conv2d) torch.nn.Conv2d(in_channels, out_channels, kernel_size, stride=1, padding