tensor de pytorch agregue una dimensión

# ADD ONE DIMENSION: .unsqueeze(dim)

my_tensor = torch.tensor([1,3,4])
# tensor([1,3,4])

my_tensor.unsqueeze(0)
# tensor([[1,3,4]])

my_tensor.unsqueeze(1)
# tensor([[1],
#         [3],
#         [4]])
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