.load_state_dict只导入部分权重
时间: 2023-08-07 15:05:12 浏览: 149
pytorch 状态字典:state_dict使用详解
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.load_state_dict()函数可以用来加载模型的权重。默认情况下,它要求完全匹配,即加载的权重字典的键必须与模型的参数键完全匹配,否则会报错。但是,你可以通过将strict参数设置为False来实现部分匹配,这样只会加载权重字典中存在的参数,不匹配的参数会被跳过。例如,你可以使用以下代码来加载部分权重:
```python
pretrained_dict = torch.load(weight_path)
model.load_state_dict(pretrained_dict, strict=False)
```
这样,只有权重字典中存在的参数才会被加载到模型中,不匹配的参数会被跳过。你还可以使用if语句来进行进一步的筛选,只加载满足特定条件的参数。例如,你可以使用以下代码来加载满足条件的权重:
```python
import pickle
with open(weights_path, 'rb') as f:
obj = f.read()
weights = {key: weight_dict for key, weight_dict in pickle.loads(obj, encoding='latin1').items() if (key in model_dict and 'Prediction' not in key)}
model.load_state_dict(weights)
```
这样,只有满足条件的权重参数才会被加载到模型中。
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