statsmodels.tsa.arima_model.ARIMA.predict
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ARIMA.predict(params, start=None, end=None, exog=None, typ='linear', dynamic=False)
[source]
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ARIMA model in-sample and out-of-sample prediction
Parameters: |
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params (array-like) – The fitted parameters of the model.
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start (int, str, or datetime) – Zero-indexed observation number at which to start forecasting, ie., the first forecast is start. Can also be a date string to parse or a datetime type.
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end (int, str, or datetime) – Zero-indexed observation number at which to end forecasting, ie., the first forecast is start. Can also be a date string to parse or a datetime type. However, if the dates index does not have a fixed frequency, end must be an integer index if you want out of sample prediction.
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exog (array-like, optional) – If the model is an ARMAX and out-of-sample forecasting is requested, exog must be given. Note that you’ll need to pass
k_ar additional lags for any exogenous variables. E.g., if you fit an ARMAX(2, q) model and want to predict 5 steps, you need 7 observations to do this. -
dynamic (bool, optional) – The
dynamic keyword affects in-sample prediction. If dynamic is False, then the in-sample lagged values are used for prediction. If dynamic is True, then in-sample forecasts are used in place of lagged dependent variables. The first forecasted value is start . -
typ (str {'linear', 'levels'}) –
- ‘linear’ : Linear prediction in terms of the differenced endogenous variables.
- ’levels’ : Predict the levels of the original endogenous variables.
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Returns: |
predict – The predicted values. |
Return type: |
array |
Notes
Use the results predict method instead.