1、torch.clamp(input,min,max,out=None)-> Tensor
将input中的元素限制在[min,max]范围内并返回一个Tensor
2、index_select()
x = torch.randn(3, 4)
print(x)
indices = torch.LongTensor([0, 2]) y = torch.index_select(x, 0, indices) print(y)
z = torch.index_select(x, 1, indices) print(z)
参考：https://blog.csdn.net/appleml/article/details/78630452
x = torch.randn(3, 4)
print(x)
indices = torch.LongTensor([0, 2])
y = torch.index_select(x, 0, indices)
print(y)
z = torch.index_select(x, 1, indices)
print(z)