Returns a new tensor with a dimension of size one inserted at the specified position.
The returned tensor shares the same underlying data with this tensor.
A dim
value within the range [-input.dim() - 1, input.dim() + 1)
can be used. Negative dim
will correspond to unsqueeze()
applied at dim
= dim + input.dim() + 1
.
>>> x = torch.tensor([1, 2, 3, 4]) >>> torch.unsqueeze(x, 0) tensor([[ 1, 2, 3, 4]]) >>> torch.unsqueeze(x, 1) tensor([[ 1], [ 2], [ 3], [ 4]])
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