torch.flatten()

 将张量拉成一维的向量

x=torch.randn(2,3,2)
x2=torch.flatten(x,0)
x3=torch.flatten(x,1)
x4=torch.flatten(x,2)

import torch
x=torch.randn(2,3,2)
print(x)
#生成：
[
[
[-0.5829,
0.8214],
[ 0.6218,
0.3298],
[ 0.0222, -0.8473]
],
[
[ 0.1044, -1.8784],
[ 1.2323,
2.6551],
[ 0.0382,
0.6649]
]
]
x2=torch.flatten(x,0)#等价于x2=torch.flatten(x)
print(x2)
[-0.5829,
0.8214,
0.6218,
0.3298,
0.0222, -0.8473,
0.1044, -1.8784, 1.2323,
2.6551,0.0382,
0.6649]

import torch
x=torch.randn(2,3,2)
print(x)
#生成：
[
[
[-0.5829,
0.8214],
[ 0.6218,
0.3298],
[ 0.0222, -0.8473]
],
[
[ 0.1044, -1.8784],
[ 1.2323,
2.6551],
[ 0.0382,
0.6649]
]
]
x3=torch.flatten(x,1)
print(x3)
[
[-0.5829,
0.8214,
0.6218,
0.3298,
0.0222, -0.8473],
[ 0.1044, -1.8784,
1.2323,
2.6551,
0.0382,
0.6649]
]

import torch
x=torch.randn(2,3,2)
print(x)
#生成：
[
[
[-0.5829,
0.8214],
[ 0.6218,
0.3298],
[ 0.0222, -0.8473]
],
[
[ 0.1044, -1.8784],
[ 1.2323,
2.6551],
[ 0.0382,
0.6649]
]
]
x4=torch.flatten(x,2)
print(x4)
[
[
[-0.5829,
0.8214],
[ 0.6218,
0.3298],
[ 0.0222, -0.8473]
],
[
[ 0.1044, -1.8784],
[ 1.2323,
2.6551],
[ 0.0382,
0.6649]
]
]

最后

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