plt.plot(X_train.iloc[:,i])

I apologize, but as an AI language model, I don't have access to the variables or data you are referring to. Can you please provide more context so I can assist you better?

相关问题

加载数据 X = data.iloc[:, :-1].values y = data.iloc[:, -1:].values X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42) # 训练模型 input_dim=13 hidden_dim=25 output_dim=1 nn=NeuralNetwork(input_dim, hidden_dim, output_dim) learning_rate=0.0016 num_epochs=2000 loss_history=nn.train(X, y, learning_rate, num_epochs) plt.plot(loss_history) plt.title('loss') plt.xlabel('Epoch') plt.ylabel('MSE') X_pred = data_pred.iloc[:, :-1].values y_pred = data_pred.iloc[:, -1:].values y_pred = nn.predict(X_pred)报错NameError: name 'data_pred' is not defined解决代码

你需要先定义 `data_pred` 变量并赋值，再执行 `X_pred = data_pred.iloc[:, :-1].values` 和 `y_pred = data_pred.iloc[:, -1:].values` 这两行代码。例如：

import pandas as pd

# 加载数据
data = pd.read_csv('train_data.csv')
data_pred = pd.read_csv('predict_data.csv')

X = data.iloc[:, :-1].values
y = data.iloc[:, -1:].values
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)

# 训练模型
input_dim = 13
hidden_dim = 25
output_dim = 1
nn = NeuralNetwork(input_dim, hidden_dim, output_dim)
learning_rate = 0.0016
num_epochs = 2000
loss_history = nn.train(X, y, learning_rate, num_epochs)
plt.plot(loss_history)
plt.title('loss')
plt.xlabel('Epoch')
plt.ylabel('MSE')

X_pred = data_pred.iloc[:, :-1].values
y_pred = data_pred.iloc[:, -1:].values
y_pred = nn.predict(X_pred)

plt.figure(figsize=(10, 5)) plt.plot(train_data[0], train_data[1], label='true') plt.plot(train_data.iloc[n_steps:, 0], model_stacked.predict(np.hstack((model_lstm.predict(train_x.reshape((-1, n_steps, len(top_freqs_idx)))), model_svr.predict(train_x[:, low_freqs_idx])).reshape((-1, 1))), label='pred') plt.xlabel('time/h') plt.ylabel('kwh') plt.title('Training Set') plt.legend() plt.show()以上代码报错，解释原因

这段代码缺少了分号 (;) 或者换行符，应该写成这样：

plt.figure(figsize=(10, 5))
plt.plot(train_data[0], train_data[1], label='true')
plt.plot(train_data.iloc[n_steps:, 0], model_stacked.predict(np.hstack((model_lstm.predict(train_x.reshape((-1, n_steps, len(top_freqs_idx)))), model_svr.predict(train_x[:, low_freqs_idx])).reshape((-1, 1))), label='pred')
plt.xlabel('time/h')
plt.ylabel('kwh')
plt.title('Training Set')
plt.legend()
plt.show()

如果你已经按照上述方式修改了代码，但仍然报错，请将错误信息贴出来，这样我才能更好地帮助你。