mask = torch.tensor([[True, False, False], [False, True, False]], dtype=torch.bool) # 使用masked_fill函数填充掩码为True的位置 x = x.masked_fill(mask, value=-1) print(x) 在这个例子中,x是一个2x3的张量,mask是一个布尔掩码张量,其形状与x相同。masked_f
这个masked_fill是用到attention中softmax之前的操作,相同的实现可以写为: attn_weights=attn_weights*(1-padding_mask)attn_weights=attn_weights+padding_mask*(-1e30) 1.2 初始化tensor 在PyTroch中可以使用torch.tensor()或者torch.Tensor()来初始化一个向量, a=torch.Tensor([1,2,3])print(a)print(a.dty...
importtorch.nn.functionalasFimportnumpyasnp 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: Im...
①(input,mat2,*,out=None)②torch.bmm(input,mat2,*,out=None)③torch.matmul(input, other, *, out=None)④Tensor.masked_fill 2、 语法为: (input, mat2, *, out=None) → Tensor 1. 就是矩阵的乘法。如果输入input是(n,m),mat2是(m, p),则输出为(n, p)。 示例: mat1 = torch.randn...
pytorchmasked_fill报错的解决 pytorchmasked_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...
Pytorch 读入mat pytorch masked_fill masked_fill()函数 主要用在transformer的attention机制中,在时序任务中,主要是用来mask掉当前时刻后面时刻的序列信息。此时的mask主要实现时序上的mask。 >>>a=torch.tensor([1,0,2,3]) >>>a.masked_fill(mask = torch.ByteTensor([1,1,0,0]), value=torch.tensor(...
#使用tensor的masked_fill方法,将掩码张量和scores张量每个位置一一比较,如果掩码张量则对应的scores张量用-1e9这个置来替换 scores = scores.masked_fill(mask == 0, -1e9) #对scores的最后一维进行softmax操作,使用F.softmax方法,这样获得最终的注意力张量 ...
masked_fill_on cpu: tensor_cpu=torch.LongTensor([[0], [1]]).expand(2,4)mask_cpu=torch.BoolTensor( [[False,True,False,False], [False,False,False,False]] )tensor_cpu.masked_fill_(mask_cpu,3)print(tensor_cpu) Output: tensor([[3, 3, 3, 3], [1, 1, 1, 1]]) ...
前阵子有个学生要投简历,他在“UI工程师”和“前端工程师”这两个岗位中权衡,最后选择了“前端工程...
pytorch has squeeze , tf also has squeeze. pytorch has unsqueeze, tf has expand_dims do the same thing with diff name. pythorh has masked_fill , tf has ? Please make sure that this is a feature request. As per our GitHub Policy, we only ...