torch.nn.Linear函数参数使用

import torch x = torch.randn(128, 20)  # 输入的维度是（128，20）
m = torch.nn.Linear(20, 30)  # 20,30是指维度
output = m(x)
print('m.weight.shape:\n ', m.weight.shape)
print('m.bias.shape:\n', m.bias.shape)
print('output.shape:\n', output.shape) 
# ans = torch.mm(input,torch.t(m.weight))+m.bias 等价于下面的
ans = torch.mm(x, m.weight.t()) + m.bias   
print('ans.shape:\n', ans.shape) 
print(torch.equal(ans, output))