torch 만 사용하여 one-hot label 생성 방법.
# label [#, 1] to one-hot [#, n_classes]
ones_src = torch.ones(batch_size, 1)
labels = torch.zeros(batch_size, n_classes).scatter_(1, label, src=ones_src)
https://ripe-elephant-6c8.notion.site/CornerNet-30ce4fa67d444a28afc4aec29ea94655
https://ripe-elephant-6c8.notion.site/CenterNet-52622399a94c4a8995005797b8643a21
7D → 2D로 mapping 되는 generalization 뿐만아니라,
man ↔ woman, king ↔ queen 간의 generalization(연관성?)도 함께 가지게된다.
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