Count the frequency of each value in an array of non-negative ints.
The number of bins (size 1) is one larger than the largest value in input unless input is empty, in which case the result is a tensor of size 0. If minlength is specified, the number of bins is at least minlength and if input is empty, then the result is tensor of size minlength filled with zeros. If n is the value at position i, out[n] += weights[i] if weights is specified else out[n] += 1.
>>> input = torch.randint(0, 8, (5,), dtype=torch.int64) >>> weights = torch.linspace(0, 1, steps=5) >>> input, weights (tensor([4, 3, 6, 3, 4]), tensor([ 0.0000, 0.2500, 0.5000, 0.7500, 1.0000]) >>> torch.bincount(input) tensor([0, 0, 0, 2, 2, 0, 1]) >>> input.bincount(weights) tensor([0.0000, 0.0000, 0.0000, 1.0000, 1.0000, 0.0000, 0.5000])
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