Can any one help me with this question?
Lets say i have a 4x4 tensor and i want to do subsampling in the following way, so for each 2x2 block i put the smallest elements together,
then the second smallest elements, and so on, so the out put will be 4 tensors with size half of the input. Stride will be = 2.
Here is an example:
Input: 
A = 
[1     2      3     4
 5     6      7     8
 9     10    11    12
13     14    15    16 ]

Results:
A1 = 
[1     3
 9    11]

A2 = 
[2     4
 9    12]

A3 = 
[5     7
 13   15]

A4 = 
[6      8
 14    16]

And that was just a toy example, the real question is how to do it for a tensor with dimention 'BxCxMxM`