arimax python
时间: 2023-09-16 07:08:44 浏览: 123
ARIMAX (Autoregressive Integrated Moving Average with Exogenous Variables) is a time series forecasting model that incorporates exogenous variables along with the autoregressive, integrated, and moving average components. It is an extension of the ARIMA model.
In Python, you can implement ARIMAX using the `statsmodels` library. Here's an example of how to do it:
```python
import pandas as pd
import statsmodels.api as sm
# Load the data
data = pd.read_csv('data.csv', parse_dates=['date'], index_col='date')
# Define the endogenous variable
endog = data['target_variable']
# Define the exogenous variables
exog = data[['exog_var1', 'exog_var2', ...]]
# Create the ARIMAX model
model = sm.tsa.ARIMA(endog=endog, exog=exog, order=(p, d, q))
# Fit the model
model_fit = model.fit()
# Make predictions
predictions = model_fit.predict(start=start_date, end=end_date, exog=exog_forecast)
```
In this example, you need to replace `'data.csv'` with the path to your data file. `'target_variable'` should be substituted with the name of the variable you want to forecast, and `'exog_var1', 'exog_var2', ...` should be replaced with the names of your exogenous variables.
You also need to set the values of `p`, `d`, and `q` in the `order` argument based on the characteristics of your data. `start_date` and `end_date` specify the time range for which you want to make predictions, and `exog_forecast` contains the exogenous variables for the forecast period.
Remember to preprocess your data, handle missing values, and evaluate the model's performance using appropriate metrics.
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