pytorch masked_fill报错的解决

如下所示:

import torch.nn.functional as F

import numpy as np

a = torch.Tensor([1,2,3,4])

a = a.masked_fill(mask = torch.ByteTensor([1,1,0,0]), value=-np.inf)

print(a)

b = F.softmax(a)

print(b)

tensor([-inf, -inf, 3., 4.])

d:/pycharmdaima/star-transformer/ceshi.py:8: UserWarning: Implicit dimension choice for softmax has been deprecated. Change

the call to include dim=X as an argument.

b = F.softmax(a)

tensor([0.0000, 0.0000, 0.2689, 0.7311])

容易报错:

Expected object of scalar type Byte but got scalar type Long for argument #2 'mask'

原因,

mask = torch.LongTensor()

解决方法:

mask = torch.ByteTensor()

在mask值为1的位置处用value填充。mask的元素个数需和本tensor相同,但尺寸可以不同

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