Hi Guys,
I have a problem with the PMML model appender node while I'm trying to create a PMML ensemble model and export it using a standard workflow as described in:
https://www.knime.org/blog/pmml-integration-in-knime
The sequence of nodes is the following:
Empty PMML creator → PMML Model Appender → PMML writer
and the model to append is an ensemble PMML model.
As you can see in the attached workflow, if I write a PMML ensemble from the Table to PMML Ensemble node it is correctly extracted. Nevertheless if I try to write it after I use the PMML Model Appender node it gives me the following error and the model cannot be exported:
ERROR PMMLValidator : Expected element 'DataField' before the end of the content in element DataDictionary ERROR PMML Writer 0:1100 Invalid PMML document found. Errors: : Expected element 'DataField' before the end of the content in element DataDictionary ERROR PMML Writer 0:1100 Execute failed: Invalid PMML document found. Errors: : Expected element 'DataField' before the end of the content in element DataDictionary
Is the PMML Model Appender node not compatible with the Table to PMML Ensemble one? Do I am missing something?
Thanks in advance,
Gio