用一个热编码映射标签列表

Question

当"label"是一个列表时，我如何做同样的事情？例如：label=[2,4,6,1,7…，9]

label = 3
NumClass = 10
NumRows  = 100
mask    =  torch.zeros(100, 64)
ones     =  torch.ones(1, 64)
ElementsPerClass = NumRows//NumClass
mask [ ElementsPerClass*label : ElementsPerClass*(label+1) ] = ones

Answer 1

您正在寻找scatter:

NumRows = len(label)
mask = torch.zeros((NumRoes, NumClass)).scatter_(dim=1, index=torch.tensor(label, dtype=torch.long)[:, None], src=torch.ones(NumRows, 1))