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robjhyndman / M4metalearning

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error in train_selection_ensemble() #20

Open HexuanLiu opened 2 years ago

HexuanLiu commented 2 years ago

I'm following the example in metalearning_example, and I got to the steps of training the learning model. When running: meta_model <- train_selection_ensemble(train_data$data, train_data$errors) I encountered the following error: Error in rowSums(preds) : 'x' must be an array of at least two dimensions

I'm not sure if the problem is with the customxhboost package or with the error_softmax_obj function that calls rowSums(preds). Any help would be appreciated.

leogeogh commented 2 years ago

same issue, any help would be appreciated too.