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torch.Tensor.index_fill_

Tensor.index_fill_(dim, index, value) Tensor

Fills the elements of the self tensor with value value by selecting the indices in the order given in index.

Parameters:
  • dim (int) – dimension along which to index

  • index (LongTensor) – indices of self tensor to fill in

  • value (float) – the value to fill with

Example::
>>> x = torch.tensor([[1, 2, 3], [4, 5, 6], [7, 8, 9]], dtype=torch.float)
>>> index = torch.tensor([0, 2])
>>> x.index_fill_(1, index, -1)
tensor([[-1.,  2., -1.],
        [-1.,  5., -1.],
        [-1.,  8., -1.]])

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