X-Aggregator: Execute failed: Input table's structure differs from reference (first iteration) table: different column counts

Hi everybody,

I get this error message when trying to execute my workflow: “Execute failed: Input table’s structure differs from reference (first iteration) table: different column counts”
This only occurs when I tick “Append columns with normalized class distribution” in the Decision Tree Predictor. If I don’t click this option it works perfectly fine. I leave all the other settings unchanged.
Screenshot 2021-05-30 at 19.46.28

How can I solve this and what is the reason behind this error?
I am really looking forward to your help!

The error message tells you what’s wrong. Your input table contains a different number of columns compared to the result of the first iteration.

As you say in your post, when you tell the decision tree predictor node to add a column, then error appears. When you disable this option, the error goes away.

It’s all consistent.

If you’re doing cross-partitioning, why do you need to add the class distributions?


I have the same problem. I need to create the distribution for the ranking of the predictions. Is there any way to work around the message?

Maybe you could write them to a separate file and then remove them before using the closing node for the Crossvalidation

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