flatten(), unflatten() and ravel() in PyTorch

flatten() can remove zero or more dimensions from a 0D or more D tensor as shown below:

*Memos:

• 
  flatten() can be used with torch and a tensor.


• The tensor of zero or more integers, floating-point numbers, complex numbers or boolean values can be used.


• The 2nd argument(int) with torch or the 1st argument(int) with a tensor is start_dim(Optional-Default:0) which is the 1st dimension.


• The 3rd argument(int) with torch or the 2nd argument(int) with a tensor is end_dim(Optional-Default:-1) which is the …

dimensions flatten integers memos numbers pytorch tensor torch unflatten values