from sklearn.preprocessing import MinMaxScaler报错
时间: 2023-11-20 09:05:55 浏览: 154
如果你导入 `from sklearn.preprocessing import MinMaxScaler` 出现错误,可能是因为你没有安装或者没有正确安装 Scikit-learn 库。
请尝试在命令行中使用以下命令安装 Scikit-learn:
```
pip install -U scikit-learn
```
如果你已经安装了 Scikit-learn 库,但是仍然出现错误,请提供完整的错误提示信息,以便我更好地帮助你。
相关问题
from sklearn.preprocessing import MinMaxScalerb报错
这个错误可能是因为你拼写错误了,正确的导入语句应该是:
```python
from sklearn.preprocessing import MinMaxScaler
```
请检查一下你的代码是否有拼写错误或者其他语法错误。如果还是无法解决问题,请提供完整的错误提示信息,以便我更好地帮助你。
import pandas as pd import numpy as np import matplotlib.pyplot as plt import tensorflow as tf from tensorflow.keras.models import Sequential from tensorflow.keras.layers import LSTM, Dense data = pd.read_csv('车辆:274序:4结果数据.csv') x = data[['车头间距', '原车道前车速度']].values y = data['本车速度'].values train_size = int(len(x) * 0.7) test_size = len(x) - train_size x_train, x_test = x[0:train_size,:], x[train_size:len(x),:] y_train, y_test = y[0:train_size], y[train_size:len(y)] from sklearn.preprocessing import MinMaxScaler scaler = MinMaxScaler(feature_range=(0, 1)) x_train = scaler.fit_transform(x_train) x_test = scaler.transform(x_test) model = Sequential() model.add(LSTM(50, input_shape=(2, 1))) model.add(Dense(1)) model.compile(loss='mean_squared_error', optimizer='adam') history = model.fit(x_train.reshape(-1, 2, 1), y_train, epochs=100, batch_size=32, validation_data=(x_test.reshape(-1, 2, 1), y_test)) plt.plot(history.history['loss']) plt.plot(history.history['val_loss']) plt.title('Model loss') plt.ylabel('Loss') plt.xlabel('Epoch') plt.legend(['Train', 'Test'], loc='upper right') plt.show() train_predict = model.predict(x_train.reshape(-1, 2, 1)) test_predict = model.predict(x_test.reshape(-1, 2, 1)) train_predict = scaler.inverse_transform(train_predict) train_predict = train_predict.reshape(-1, 1) y_train = scaler.inverse_transform([y_train]) test_predict = scaler.inverse_transform(test_predict) y_test = scaler.inverse_transform([y_test]) plt.plot(y_train[0], label='train') plt.plot(train_predict[:,0], label='train predict') plt.plot(y_test[0], label='test') plt.plot(test_predict[:,0], label='test predict') plt.legend() plt.show()报错Traceback (most recent call last): File "C:\Users\马斌\Desktop\NGSIM_data_processing\80s\lstmtest.py", line 42, in <module> train_predict = scaler.inverse_transform(train_predict) File "D:\python\python3.9.5\pythonProject\venv\lib\site-packages\sklearn\preprocessing\_data.py", line 541, in inverse_transform X -= self.min_ ValueError: non-broadcastable output operand with shape (611,1) doesn't match the broadcast shape (611,2)
这个错误提示是因为在使用 `scaler.inverse_transform()` 函数时,输入的 `train_predict` 和 `y_train` 的维度不匹配,导致无法进行运算。具体来说,`train_predict` 是一个形状为 `(611, 1)` 的二维数组,而 `y_train` 是一个形状为 `(1, 611)` 的二维数组,因此无法直接进行运算。
你可以尝试使用以下代码将 `y_train` 转换为一维数组,再进行运算:
```
train_predict = scaler.inverse_transform(train_predict)
train_predict = train_predict.reshape(-1) # 将结果变为一维数组
y_train = scaler.inverse_transform(y_train.reshape(-1, 1)).reshape(-1) # 将结果变为一维数组
```
同样的,你也需要将 `y_test` 转换为一维数组,再进行相应的操作。
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