pytorch api torch.nn.Linear

线性层实现了$y=x{A}^T+b$

参数	描述
in_features	输入节点数
out_features	输出节点数
bias	如果为假，将不会有b。默认为真

对象	描述
self.in_features	in_features
self.out_features	out_features
self.weight	Parameter(torch.Tensor(out_features, in_features))
self.bias	Parameter(torch.Tensor(out_features))
forward(self, input)	F.linear(input, self.weight, self.bias)

参考文献:
https://pytorch.org/docs/stable/nn.html#linear-layers