Hello,
Given a 3d tensor x
and a 2d Long tensor idx
, I want to compute the out
tensor defined as
out[i, j] = x[i, j, idx[i, j]]
Any idea how I could do that efficiently?
Thanks
Hello,
Given a 3d tensor x
and a 2d Long tensor idx
, I want to compute the out
tensor defined as
out[i, j] = x[i, j, idx[i, j]]
Any idea how I could do that efficiently?
Thanks
Found the solution. For anyone interested:
idx = idx.unsqueeze(2)
out = x.gather(2, idx)
out = out.squeeze(2)