model.load_state_dict()
时间: 2023-03-19 09:29:59 浏览: 82
model.load_state_dict()是一个PyTorch中的函数,用于加载模型的参数。它可以将预训练模型的参数加载到新的模型中,或者将之前训练好的模型的参数加载到当前模型中,以便继续训练或进行推理。
相关问题
model.load_state_dict
()This method is used to load the state dictionary of a PyTorch model from a previously saved checkpoint. The state dictionary represents the current state of the model's parameters and optimizer.
To use this method, one must have a saved checkpoint file containing the state dictionary. This file can be loaded using the `torch.load()` method. Once loaded, the state dictionary can be passed to the `load_state_dict()` method to update the model's parameters.
Here is an example of loading a saved checkpoint file and updating the model's state dictionary:
```
checkpoint = torch.load('checkpoint.pth')
model.load_state_dict(checkpoint['state_dict'])
```
In this example, the saved checkpoint file is loaded using `torch.load()` and the state dictionary is extracted using the key `state_dict`. This state dictionary is then passed to the `load_state_dict()` method to update the model's parameters.
model.load_state_dict报错
model.load_state_dict报错是由于模型载入参数键不匹配造成的。具体原因是在载入参数时,模型的state_dict中缺少了一些键或者有一些额外的键。
解决这个问题的方法有两种。第一种方法是手动修改state_dict,使其键与模型中的参数键匹配。你可以使用model.state_dict()来查看模型的参数键,然后通过添加或删除state_dict中的键来实现匹配。第二种方法是在载入参数时使用strict=False参数,这样可以忽略掉一些不匹配的键,但是要注意这可能会导致一些参数无法载入或者参数不正确。
需要注意的是,如果你选择使用strict=False参数,请确保模型的结构与载入参数的结构是一致的,否则可能会导致模型无法正常工作。你可以通过查看模型的结构和载入参数的结构来确保它们的一致性。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *2* [【pytorch载入模型参数报错以及解决办法,小心使用strict=False】](https://blog.csdn.net/qq_44698655/article/details/123730036)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
- *3* [ResNet模型权重.zip](https://download.csdn.net/download/qq_45388369/21057686)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]