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jpmml / jpmml-lightgbm

Java library and command-line application for converting LightGBM models to PMML
GNU Affero General Public License v3.0
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An error occurred when the dataset contains string features #47

Closed Archmagegck closed 3 years ago

Archmagegck commented 3 years ago

My dataset contains some string features, and I used StringIndexer + OneHotEncoder to encode them. When I put the StringIndexers, OneHotEncoders, VectorAssembler, and LightGBM in a pipeline, and fit the pipeline, everything is ok. image But, when I want to saved the pipeline into PMML, an error occurred. The error log is: Py4JJavaError: An error occurred while calling o353581.buildFile. : java.lang.IllegalArgumentException: Field userinfov4_worktype has data type string image

userinfov4_worktype is one of the string features. I used jpmml-lightgbm-1.2.13

vruusmann commented 3 years ago

I used jpmml-lightgbm-1.2.13

According to the posted stack trace, this exception is raised via/by the org.jpmml.sparkml.lightgbm.BoosterUtil utility class.

This class is not part of the JPMML ecosystem.

Please refer to that person/organization who is responsible for that crap (and is violating my IP rights with respect to the JPMML trademark, and generic JPMML license terms and conditions).

vruusmann commented 3 years ago

Closing as exact duplicate of https://github.com/jpmml/jpmml-sparkml/issues/107

@Archmagegck Please stop spamming the JPMML organization by opening/closing issues randomly.

Archmagegck commented 3 years ago

I'm very sorry that I didn't look at the source of the problem carefully. Sorry to disturb you. Thank you for your advice.