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1. 基础知识准备
bash复制代码
pip install tensorflow keras pytorch numpy pandas matplotlib seaborn
使用venv
或conda
创建一个虚拟环境,以避免库冲突。
例如,选择PyTorch:
python复制代码
import torch
import torch.nn as nn
import torch.optim as optim
python复制代码
class SimpleModel(nn.Module):
def __init__(self):
super(SimpleModel, self).__init__()
self.fc = nn.Linear(10, 1) # 示例模型,输入特征数为10,输出为1
def forward(self, x):
return self.fc(x)
python复制代码
import torch.utils.data as data
import numpy as np
# 生成一些随机数据
X = np.random.randn(1000, 10).astype(np.float32)
y = np.random.randn(1000, 1).astype(np.float32)
# 创建数据集和数据加载器
dataset = data.TensorDataset(torch.from_numpy(X), torch.from_numpy(y))
dataloader = data.DataLoader(dataset, batch_size=32, shuffle=True)
python复制代码
model = SimpleModel()
criterion = nn.MSELoss()
optimizer = optim.Adam(model.parameters(), lr=0.001)
num_epochs = 100
for epoch in range(num_epochs):
for inputs, targets in dataloader:
optimizer.zero_grad()
outputs = model(inputs)
loss = criterion(outputs, targets)
loss.backward()
optimizer.step()
print(f'Epoch {epoch+1}/{num_epochs}, Loss: {loss.item()}')
python复制代码
scheduler = optim.lr_scheduler.StepLR(optimizer, step_size=30, gamma=0.1)
for epoch in range(num_epochs):
# 训练代码...
scheduler.step()
选择一篇论文,复现其算法。通常步骤包括: