transformer算法python
时间: 2023-10-25 16:10:59 浏览: 98
transformer代码
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Transformer算法的Python实现可以参考以下代码:
```python
import torch
import torch.nn as nn
import torch.nn.functional as F
import math
class Generator(nn.Module):
def __init__(self, d_model, vocab_size):
super().__init__()
self.project = nn.Linear(d_model, vocab_size)
def forward(self, x):
return F.softmax(self.project(x), dim=-1)
def attention(query, key, value, mask=None, dropout=None):
d_k = query.size(-1)
scores = torch.matmul(query, key.transpose(-2, -1)) / math.sqrt(d_k)
if mask is not None:
scores = scores.masked_fill(mask == 0, 1e-9)
p_attn = F.softmax(scores, dim=-1)
attn = torch.matmul(p_attn, value)
return attn, p_attn
# 示例输入
x = de_result
d_model = 512
vocab_size = 10000
gen = Generator(d_model, vocab_size)
gen_result = gen(x)
print(gen_result)
print(gen_result.shape)
```
请注意,这只是一个Transformer算法的简单示例,具体实现可能会有所不同。
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