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                                            tempcollab

How can ARIMA do one step predict with new test data?

@ChadFulton the above solution doesn't work for the ARIMA model: ``` modelA = sm.tsa.ARIMA(dataset_A, order=(3, 0, 3)) resA = modelA.fit() modelB = sm.tsa.ARIMA(dataset_B, order=(3, 0, 3)) resB = modelB.smooth(resA.params) resB.forecast()...