Hello! I tried to use the One to Many node but I got the following error: "Possible value domain for column "Country" is empty, use the Domain Calculator node (with a sufficient possible value limit) to create it." Do you know how to solve it?
Thanks. One more question if I could. Is it necessary to delete one of the encoded variables from the model i.e. if the encoded value for all remaining variables is zero, it must be the case that the value is one for the variable that was excluded. @@ewhulbert
Hello! I tried to use the One to Many node but I got the following error: "Possible value domain for column "Country" is empty, use the Domain Calculator node (with a sufficient possible value limit) to create it." Do you know how to solve it?
In a KNIME Regression workflow, is one hot encoding normally done before partitioning?
Yes. Wouldn't matter if the same results are present everywhere, but you want to make sure both sides of the partition are the same.
Thanks. One more question if I could. Is it necessary to delete one of the encoded variables from the model i.e. if the encoded value for all remaining variables is zero, it must be the case that the value is one for the variable that was excluded.
@@ewhulbert
@@warrenpayne8826 Not 100% sure I understand the question, but yeah I'd exclude it from the model if there is no variability in it.