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Stacking models with Orange Data Mining

I am using Orange Data Mining for some classification tasks. I don't understand why I can't use a stacked model to make predictions using a test dataset. I have read most of the documentation and I couldn't find anything on this issue. I am using Orange 3.21.0.

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Solution

  • Well, you need a model to use it for predictions. And every model needs a data to be trained on. Connect the first File widget to Stacking and it should work.