print(torch.arange(0, n_class)) # n_class=60
print(torch.arange(0, n_class).view(n_class, 1, 1)) # 变换形状view(x,y,z),xyz是维度
print(torch.arange(0, n_class).view(n_class, 1, 1).expand(n_class, n_query, 1)) # expand(原,行增,列增)
print(torch.arange(0, n_class).view(n_class, 1, 1).expand(n_class, n_query, 1).long())
结果:
tensor([ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
54, 55, 56, 57, 58, 59])
tensor([[[ 0]],
[[ 1]],
......
[[59]]])
tensor([[[ 0],
[ 0],
[ 0],
[ 0],
[ 0]],
[[ 1],
[ 1],
[ 1],
[ 1],
[ 1]],
......
[[59],
[59],
[59],
[59],
[59]]])
tensor([[[ 0],
[ 0],
[ 0],
[ 0],
[ 0]],
[[ 1],
[ 1],
[ 1],
[ 1],
[ 1]],
......
[[59],
[59],
[59],
[59],
[59]]])