squeeze in PyTorch

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*My post explains unsqueeze().

squeeze() can get the 0D or more D tensor of the zero or more elements whose zero or more dimensions are removed if the size is 1 from the 0D or more D tensor of zero or more elements as shown below:

*Memos:

• squeeze() can be used with torch or a tensor.
• The 1st argument(input) with torch or using a tensor(Required-Type:tensor of int, float, complex or bool).
• The 2nd argument with torch or the 1st or more arguments with a tensor are dim(Optional-Type:int, tuple of int or list of int): *Memos:
  • Each number must be unique.
  • It can remove the specific zero or more dimensions whose size is 1.
  • If the size is not 1, zero or more dimensions are not removed even if you set it.

import torch

my_tensor = torch.tensor([[[[0], [1]],
                           [[2], [3]],
                           [[4], [5]]]])
torch.squeeze(input=my_tensor)
my_tensor.squeeze()
torch.squeeze(input=my_tensor, dim=(0, 3))
my_tensor.squeeze(dim=(0, 3))
my_tensor.squeeze(0, 3)
torch.squeeze(input=my_tensor, dim=(0, 1, 3))
my_tensor.squeeze(dim=(0, 1, 3))
my_tensor.squeeze(0, 1, 3)
etc.
torch.squeeze(input=my_tensor, dim=(0, 1, 2, 3))
my_tensor.squeeze(dim=(0, 1, 2, 3))
my_tensor.squeeze(0, 1, 2, 3)
etc.
# tensor([[0, 1],
#         [2, 3],
#         [4, 5]])

torch.squeeze(input=my_tensor, dim=0)
torch.squeeze(input=my_tensor, dim=-4)
torch.squeeze(input=my_tensor, dim=(0,))
torch.squeeze(input=my_tensor, dim=(-4,))
torch.squeeze(input=my_tensor, dim=(0, 1))
torch.squeeze(input=my_tensor, dim=(0, 2))
torch.squeeze(input=my_tensor, dim=(0, -2))
torch.squeeze(input=my_tensor, dim=(0, -3))
torch.squeeze(input=my_tensor, dim=(1, 0))
etc.
torch.squeeze(input=my_tensor, dim=(0, 1, 2))
etc.
# tensor([[[0], [1]],
#         [[2], [3]],
#         [[4], [5]]])

torch.squeeze(input=my_tensor, dim=1)
torch.squeeze(input=my_tensor, dim=2)
torch.squeeze(input=my_tensor, dim=-2)
torch.squeeze(input=my_tensor, dim=-3)
torch.squeeze(input=my_tensor, dim=())
torch.squeeze(input=my_tensor, dim=(1,))
torch.squeeze(input=my_tensor, dim=(2,))
torch.squeeze(input=my_tensor, dim=(-2,))
torch.squeeze(input=my_tensor, dim=(-3,))
torch.squeeze(input=my_tensor, dim=(1, 2))
etc.
# tensor([[[[0], [1]],
#          [[2], [3]],
#          [[4], [5]]]])

torch.squeeze(input=my_tensor, dim=3)
torch.squeeze(input=my_tensor, dim=-1)
torch.squeeze(input=my_tensor, dim=(3,))
torch.squeeze(input=my_tensor, dim=(-1,))
torch.squeeze(input=my_tensor, dim=(1, 3))
torch.squeeze(input=my_tensor, dim=(1, -1))
torch.squeeze(input=my_tensor, dim=(2, 3))
torch.squeeze(input=my_tensor, dim=(2, -1))
torch.squeeze(input=my_tensor, dim=(3, 1))
etc.
torch.squeeze(input=my_tensor, dim=(1, 2, 3))
etc.
# tensor([[[0, 1],
#          [2, 3],
#          [4, 5]]])

my_tensor = torch.tensor([[[[0.], [1.]],
                           [[2.], [3.]],
                           [[4.], [5.]]]])
torch.squeeze(input=my_tensor)
# tensor([[0., 1.],
#         [2., 3.],
#         [4., 5.]])

my_tensor = torch.tensor([[[[0.+0.j], [1.+0.j]],
                           [[2.+0.j], [3.+0.j]],
                           [[4.+0.j], [5.+0.j]]]])
torch.squeeze(input=my_tensor)
# tensor([[0.+0.j, 1.+0.j],
#         [2.+0.j, 3.+0.j],
#         [4.+0.j, 5.+0.j]])

my_tensor = torch.tensor([[[[True], [False]],
                           [[False], [True]],
                           [[True], [False]]]])
torch.squeeze(input=my_tensor)
# tensor([[True, False],
#         [False, True],
#         [True, False]])

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