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these are two different things. The first warning comes, because RapidMiner does not know the length of your excel file. Then it warns you that it may be too short. Did you run the wizard?
The second one is an error of the ARIMA operator you likely run inside. It just fails to find a solution.
these are two different things. The first warning comes, because RapidMiner does not know the length of your excel file. Then it warns you that it may be too short. Did you run the wizard?
The second one is an error of the ARIMA operator you likely run inside. It just fails to find a solution.
Best,
Martin