07-pytorch 的乘法

# 点乘
x1 = t.Tensor(np.arange(12).reshape(3,4))
x2 = t.Tensor(np.arange(12).reshape(3,4))
x3 = x1.mul(x2)
print(x3)
# 矩阵相乘
x1 = t.Tensor(np.arange(12).reshape(3,4))
print(x1)
x2 = t.Tensor([1,2,3,4]).view(4,1)
print(x1.shape, x2.shape)
x3 = x1.mm(x2)
print(x3)