将它们用一个代码实现
时间: 2024-02-06 20:09:50 浏览: 23
这里提供一个使用Pytorch实现ChitGPT的示例代码:
```python
import torch
import torch.nn as nn
from transformers import GPT2Tokenizer, GPT2Model
class ChitGPT(nn.Module):
def __init__(self, num_tokens):
super(ChitGPT, self).__init__()
self.transformer = GPT2Model.from_pretrained('gpt2')
self.fc = nn.Linear(self.transformer.config.n_embd, num_tokens)
self.softmax = nn.Softmax(dim=1)
def forward(self, input_ids, attention_mask):
hidden_states = self.transformer(input_ids=input_ids, attention_mask=attention_mask)[0]
logits = self.fc(hidden_states[:, -1, :])
probs = self.softmax(logits)
return probs
# Example usage
tokenizer = GPT2Tokenizer.from_pretrained('gpt2')
model = ChitGPT(num_tokens=len(tokenizer))
input_text = "Hello, how are you?"
input_ids = torch.tensor([tokenizer.encode(input_text)])
attention_mask = torch.ones_like(input_ids)
probs = model(input_ids, attention_mask)
```
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