resnet18模型实现猫狗大战
时间: 2023-12-11 16:32:52 浏览: 140
猫狗大战游戏模版
为了实现猫狗大战,我们可以使用ResNet18模型。下面是实现步骤:
1. 导入必要的库和模型
```python
import torch
import torch.nn as nn
from torchvision.models import resnet18
```
2. 加载预训练模型
```python
model = resnet18(pretrained=True)
```
3. 冻结模型的参数
```python
for param in model.parameters():
param.requires_grad = False
```
4. 替换最后一层
```python
num_ftrs = model.fc.in_features
model.fc = nn.Linear(num_ftrs, 2)
```
5. 定义损失函数和优化器
```python
criterion = nn.CrossEntropyLoss()
optimizer = torch.optim.SGD(model.fc.parameters(), lr=0.001, momentum=0.9)
```
6. 训练模型
```python
# 训练代码略
```
7. 测试模型
```python
# 测试代码略
```
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