pytorch搭建一个简单神经网络 import torch import torch.nn as nn # 定义数据 # x:输入数据 # y:标签 x = torch.Tensor([[0.2, 0.4], [0.2, 0.3], [0.3, 0.4]]) y = torch.Tensor([[0.6], [0.5], [0.7]]) class MyNet(nn.Module): def __init__(self): # 调用基类构造函数 super(MyNet, self).__ini…